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 Q]: Question: Rich sees a blue star with his telescope. Tina sees a red star with his telescope. _____ sees the cooler star. 
 Answer: Tina
[EX A]: But, in stars, the bluer the star, the hotter it is, and the redder it is, the older and colder it is.

[EX Q]: Question: Do gas engine cars pollute more or less than electric engine cars? 
 Answer: more
[EX A]: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.

[EX Q]: Question: When we dig up rocks the deeper we get the rocks get 
 Answer: older
[EX A]:
Older rocks are at the bottom and younger rocks are at the top.