QUES: Q: Where was the Roman abacus first used?
A: The abacus was initially used for arithmetic tasks.
Does the answer answer the question?

ANS: no

QUES: Q: What did Descartes believe about vacuums in nature?
A: Although Descartes agreed with the contemporary position, that a vacuum does not occur in nature, the success of his namesake coordinate system and more implicitly, the spatialcorporeal component of his metaphysics would come to define the philosophically modern notion of empty space as a quantified extension of volume.
Does the answer answer the question?

ANS: yes

QUES: Q: When did the French language adopt the word 'police'?
A: The word, and the concept of police itself, were "disliked as a symbol of foreign oppression" (according to Britannica 1911).
Does the answer answer the question?

ANS: no

QUES: Q: What replaced the Macintosh Portable in 1991?
A: Although due to considerable design issues, it was soon replaced in 1991 with the first of the PowerBook line: the PowerBook 100, a miniaturized portable; the 16 MHz 68030 PowerBook 140; and the 25 MHz 68030 PowerBook 170.
Does the answer answer the question?

ANS:
yes