diff --git a/wdtk-examples/pom.xml b/wdtk-examples/pom.xml
index 41431bfbc..d434844fe 100644
--- a/wdtk-examples/pom.xml
+++ b/wdtk-examples/pom.xml
@@ -13,7 +13,7 @@
 	<packaging>jar</packaging>
 
 	<name>Wikidata Toolkit Examples</name>
-	<description>This module contains examples to use the Wikidata Toolkit. Among these examples, it also contains classes that are used to run benchmarks.</description>
+	<description>This module contains examples to use the Wikidata Toolkit. This module also contains classes that are used to run benchmarks.</description>
 
 	<dependencies>
 		<dependency>
diff --git a/wdtk-examples/src/main/java/org/wikidata/wdtk/examples/benchmark/storage/datastructure/BitVectorExample.java b/wdtk-examples/src/main/java/org/wikidata/wdtk/examples/benchmark/storage/datastructure/BitVectorExample.java
deleted file mode 100644
index 694443634..000000000
--- a/wdtk-examples/src/main/java/org/wikidata/wdtk/examples/benchmark/storage/datastructure/BitVectorExample.java
+++ /dev/null
@@ -1,102 +0,0 @@
-package org.wikidata.wdtk.examples.benchmark.storage.datastructure;
-
-/*
- * #%L
- * Wikidata Toolkit Data Model
- * %%
- * Copyright (C) 2014 Wikidata Toolkit Developers
- * %%
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * #L%
- */
-
-import org.wikidata.wdtk.storage.datastructure.impl.BitVectorImpl;
-import org.wikidata.wdtk.storage.datastructure.intf.BitVector;
-
-/**
- * Example class for {@link BitVector}.
- * 
- * @author Julian Mendez
- * 
- */
-public class BitVectorExample {
-
-	/**
-	 * Shows the examples
-	 * 
-	 * @param args
-	 *            command line arguments (they are ignored)
-	 */
-	public static void main(String[] args) {
-		BitVectorExample instance = new BitVectorExample();
-		System.out.println(instance.createExample());
-	}
-
-	/**
-	 * Constructor of example class for bit vector.
-	 */
-	public BitVectorExample() {
-	}
-
-	/**
-	 * Returns a bit vector with a regular pattern.
-	 * 
-	 * @param size
-	 *            size of the bit vector
-	 * @return a bit vector with a regular pattern.
-	 */
-	public BitVector createBitVectorWithRegularPattern(long size) {
-		BitVectorImpl bv = new BitVectorImpl();
-		for (int index = 3; index < size; index++) {
-			boolean value = (index % 3) == 0;
-			bv.addBit(value);
-		}
-		return bv;
-	}
-
-	/**
-	 * Returns a string created using a bit vector.
-	 * 
-	 * @return a string created using a bit vector
-	 */
-	public String createExample() {
-		StringBuilder str = new StringBuilder();
-		BitVector bv = createPseudorandomBitVector(0x20);
-		str.append("\nExample of 32-bit bit vector with pseudorandom-generated values\n");
-		str.append(bv.toString());
-		bv = createBitVectorWithRegularPattern(0x20);
-		str.append("\n\nExample of 32-bit bit vector with values following a regular pattern\n");
-		str.append(bv.toString());
-		str.append("\n");
-		return str.toString();
-	}
-
-	/**
-	 * Returns a bit vector which cells contain pseudorandom-generated values.
-	 * 
-	 * @param size
-	 *            size of the bit vector
-	 * @return a bit vector which cells contain pseudorandom-generated values
-	 */
-	public BitVector createPseudorandomBitVector(long size) {
-		PseudorandomNumberGenerator rand = new PseudorandomNumberGenerator(
-				0x1234);
-		BitVectorImpl bv = new BitVectorImpl();
-		for (long index = 0; index < size; index++) {
-			boolean value = rand.getPseudorandomBoolean();
-			bv.addBit(value);
-		}
-		return bv;
-	}
-
-}
diff --git a/wdtk-examples/src/main/java/org/wikidata/wdtk/examples/benchmark/storage/datastructure/PseudorandomNumberGenerator.java b/wdtk-examples/src/main/java/org/wikidata/wdtk/examples/benchmark/storage/datastructure/PseudorandomNumberGenerator.java
deleted file mode 100644
index 0b46056ff..000000000
--- a/wdtk-examples/src/main/java/org/wikidata/wdtk/examples/benchmark/storage/datastructure/PseudorandomNumberGenerator.java
+++ /dev/null
@@ -1,51 +0,0 @@
-package org.wikidata.wdtk.examples.benchmark.storage.datastructure;
-
-/*
- * #%L
- * Wikidata Toolkit Data Model
- * %%
- * Copyright (C) 2014 Wikidata Toolkit Developers
- * %%
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * #L%
- */
-
-/**
- * Pseudorandom number generator.
- * 
- * @author Julian Mendez
- * 
- */
-public class PseudorandomNumberGenerator {
-
-	int seed = 0x1234;
-
-	public PseudorandomNumberGenerator() {
-	}
-
-	public PseudorandomNumberGenerator(int seed) {
-		this.seed = seed;
-	}
-
-	/**
-	 * Returns a boolean obtained using a pseudorandom number generator.
-	 * 
-	 * @return a boolean obtained using a pseudorandom number generator
-	 * 
-	 */
-	public boolean getPseudorandomBoolean() {
-		this.seed = (0x4650 * (this.seed & 0xFFFF)) + (this.seed >> 0x10);
-		return ((this.seed & 1) == 1);
-	}
-
-}