QUES: Q: How much of a Siboglinidae's weight is symbiotic bacteria?
A: However, in members of the tube-dwelling family Siboglinidae the gut is blocked by a swollen lining that houses symbiotic bacteria, which can make up 15% of the worms' total weight.
Does the answer answer the question?

ANS: yes

QUES: Q: When did Kanye West start dating Kim Kardashian?
A: West began dating reality star and longtime friend Kim Kardashian in April 2012.
Does the answer answer the question?

ANS: yes

QUES: Q: Along with the President and Vice President, how many other members make up the Executive Board?
A: They are appointed "from among persons of recognised standing and professional experience in monetary or banking matters by common accord of the governments of the Member States at the level of Heads of State or Government, on a recommendation from the Council, after it has consulted the European Parliament and the Governing Council of the ECB".
Does the answer answer the question?

ANS: no

QUES: Q: What was the Liberian flag and constitution modeled after?
A: The Liberian constitution and flag were modeled after the United States.
Does the answer answer the question?

ANS:
yes