Question:
Choose your answer: Is "These core functions express the ways in which the Air Force is particularly and appropriately suited to contribute to national security, but they do not necessarily express every aspect of what the Air Force contributes to the nation." a good answer to the question "What do these core functions of the Air Force express?"
Answer:
yes

Question:
Choose your answer: Is "A defect can turn into a failure when the environment is changed." a good answer to the question "What is the result of the programmer making a mistake?"
Answer:
no

Question:
Choose your answer: Is "He no longer depended financially upon his father, and in the winter of 1832 he began earning a handsome income from publishing his works and teaching piano to affluent students from all over Europe." a good answer to the question "From whom did Chopin receive his first big endorsement?"
Answer:
no