In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Sentence: Lakes do craters and rifts become when they fill with water. Question: What do craters and rifts become when they fill with water?
lakes

Sentence: Oxygen is made by trees and other plants during photosynthesis. Question: What is made by trees and other plants during photosynthesis?
oxygen

Sentence: Gases such as co2 and methane can trap thermal energy in earth's atmosphere before radiating it into space. Question: Gases such as co2 and methane can trap what energy in earth's atmosphere, before radiating it into space?

thermal energy