Update 3. Get Only What You Need, and Fast.md

Author: ortizfram

Introduction to MongoDB in Python/3. Get Only What You Need, and Fast.md

@@ -93,7 +93,7 @@ for prize in prizes:
 ### 📚 Primary and secondary sorting
 ![image](https://user-images.githubusercontent.com/51888893/204382060-571d2118-4469-4142-bd7f-f3005f853ffb.png)
 
-## :gorilla What the sort?
+## 🦍 What the sort?
 > This block prints out the first five projections of a sorted query. What "sort" argument fills the blank?
 ```py
 docs = list(db.laureates.find(
@@ -108,3 +108,17 @@ for doc in docs[:5]:
     {'born': '1901-02-28', 'prizes': [{'year': '1954'}, {'year': '1962'}]}
     {'born': '1913-07-12', 'prizes': [{'year': '1955'}]}
     {'born': '1911-01-26', 'prizes': [{'year': '1955'}]}
+Possible Answers
+- [x] [("prizes.year", 1), ("born", -1)]
+- [ ] {"prizes.year": 1, "born": -1}
+- [ ] None
+- [ ] [("prizes.year", 1)]
+answer
+```py
+docs = list(db.laureates.find(
+    {"born": {"$gte": "1900"}, "prizes.year": {"$gte": "1954"}},
+    {"born": 1, "prizes.year": 1, "_id": 0},
+    sort=[("prizes.year", 1), ("born", -1)]))
+for doc in docs[:5]:
+    print(doc)
+```