In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Ex Input:
Question: If North America is larger then Asia, which continent experiences less trash buildup?
Answer: Asia

Ex Output:
The Southern Hemisphere has less trash buildup in the oceans because less of the region is continent.

Ex Input:
Question: Greta yells across the canyon in the cool morning and again in the hot afternoon. The sound likely traveled _____ in the morning.
Answer: faster

Ex Output:
For a given medium, sound has a slower speed at lower temperatures.

Ex Input:
Question: Eric has a hydrocarbon with 20 carbon atoms. Rita has a hydrocarbon with 35 carbon atoms. Whose hydrocarbon has fewer isomers?
Answer: Eric

Ex Output:
The more carbon atoms a hydrocarbon has, the greater the number of isomers.