QUES: Q: What color is zinc?
A: Zinc is a fair conductor of electricity.
Does the answer answer the question?

ANS: no

QUES: Q: What has happened to the local dialects in the French speaking regions?
A: The role played by dialects in each linguistic region varies dramatically: in the German-speaking regions, Swiss German dialects have become ever more prevalent since the second half of the 20th century, especially in the media, such as radio and television, and are used as an everyday language, while the Swiss variety of Standard German is almost always used instead of dialect for written communication (c.f. diglossic usage of a language).
Does the answer answer the question?

ANS: no

QUES: Q: What else is this particular captain known for doing ?
A: Notable Greek seafarers include people such as Pytheas of Marseilles, Scylax of Caryanda who sailed to Iberia and beyond, Nearchus, the 6th century merchant and later monk Cosmas Indicopleustes (Cosmas who sailed to India) and the explorer of the Northwestern passage Juan de Fuca.
Does the answer answer the question?

ANS: yes

QUES: Q: How do gases prevent evaporation of the filament?
A: The role of the gas is to prevent evaporation of the filament, without introducing significant heat losses.
Does the answer answer the question?

ANS:
no