QUES: Q: Why was the PVA unable to advance beyond Seoul?
A: The PVA had outrun its logistics capability and thus were unable to press on beyond Seoul as food, ammunition, and materiel were carried nightly, on foot and bicycle, from the border at the Yalu River to the three battle lines.
Does the answer answer the question?

ANS: yes

QUES: Q: How widespread was the success of CD-4 format?
A: (A further problem was that no cutting heads were available that could handle the HF information.
Does the answer answer the question?

ANS: no

QUES: Q: In what year did Bermuda enter British rule?
A: The islands became a British colony following the 1707 unification of the parliaments of Scotland and England, which created the Kingdom of Great Britain.
Does the answer answer the question?

ANS: yes

QUES: Q: Who was Pantages competitor in the theater business?
A: The theaters he built for Pantages in Seattle have been either demolished or converted to other uses, but many other theaters survive in other cities of the U.S., often retaining the Pantages name; Seattle's surviving Paramount Theatre, on which he collaborated, was not a Pantages theater.
Does the answer answer the question?

ANS:
no