With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: A summertime treat, Italian ice, began its life as a sweeter adaptation of the Sicilian granita that was strictly lemon-flavored and brought to New York and Philadelphia. Its Hispanic counterpart, "piragua", is a common shaved-ice treat brought to New York by Puerto Ricans in the 1930s. Unlike the original dish which included flavors like tamarind, mango, coconut, "piragua" is evolving to include flavors like grape and cherry, fruits which are impossible to grow in the tropical Puerto Rican climate and get exported back to the island from New York. Piragua, the Hispanic dish that is similar to Italian Ice, originally had such flavors as tamarind, mango, and coconut, but has evolved to include flavors such as cherry and grape, which are fruits that cannot be grown in Puerto Rico's tropical climate nor be exported from the island to New York.
text_B: Could a native farmer in Puerto Rico feasibly grow all of the fruits necessary to satisfy the most common customer demands for flavors of piragua, or Italian Ice?
NO.