Question:
Choose your answer: Is "Queens is served by the Queens Borough Public Library, the nation's second largest public library system, while the Brooklyn Public Library serves Brooklyn." a good answer to the question "What is the name of the library system in Queens?"
Answer:
yes

Question:
Choose your answer: Is "Some buildings have elevators with the single door on the shaft way, and double cascading doors on the cab." a good answer to the question "The single door is sometimes located where?"
Answer:
yes

Question:
Choose your answer: Is "Pig iron has a lower melting point than iron, and was used for making cast-iron." a good answer to the question "Pig iron is composed of iron and what else?"
Answer:
no