QUES: Q: When did Japan begin building the Hakata Bay barrier?
A: The Japanese defenders recognized the possibility of a renewed invasion, and began construction of a great stone barrier around Hakata Bay in 1276.
Does the answer answer the question?

ANS: yes

QUES: Q: What congressman largely specified the job description of minority leader?
A: The roles and responsibilities of the minority leader are not well-defined.
Does the answer answer the question?

ANS: no

QUES: Q: Energy may be converted to what?
A: Matter may be converted to energy (and vice versa), but mass cannot ever be destroyed; rather, mass/energy equivalence remains a constant for both the matter and the energy, during any process when they are converted into each other.
Does the answer answer the question?

ANS: yes

QUES: Q: Who did not approve of the first name for Neptune?
A: In October, he sought to name the planet Le Verrier, after himself, and he had loyal support in this from the observatory director, Francois Arago.
Does the answer answer the question?

ANS:
no