QUES: Q: How many million square miles was the Umayyad caliphate at its largest size?
A: the world had yet seen, and the fifth largest ever to exist.
Does the answer answer the question?

ANS: no

QUES: Q: Why have some specied progressively shortened their return migration?
A: Those that have long-distance migrants in the same family, such as the common chiffchaff Phylloscopus collybita, are species of southern hemisphere origins that have progressively shortened their return migration to stay in the northern hemisphere.
Does the answer answer the question?

ANS: yes

QUES: Q: Artist of the Decade was bestowed upon Beyonce from which magazine?
A: [She] and not any superannuated rock star was arguably the greatest live performer of the past 10 years."
Does the answer answer the question?

ANS: no

QUES: Q: What is often found sweeping unbroken from floor to ceiling on the interior of Gothic buildings?
A: On the interior of the building attached shafts often sweep unbroken from floor to ceiling and meet the ribs of the vault, like a tall tree spreading into branches.
Does the answer answer the question?

ANS:
yes