TASK DEFINITION: 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.
PROBLEM: Sentence: Stationary front weather phenomenon, which may bring clouds and precipitation, is created by stalled air masses. Question: What weather phenomenon, which may bring clouds and precipitation, is created by stalled air masses?

SOLUTION: stationary front

PROBLEM: Sentence: Atoms make products by rearranging their chemical bonds in a reactant. Question: What do atoms make by rearranging their chemical bonds in a reactant?

SOLUTION: products

PROBLEM: Sentence: Liquid nitrogen is used for cooling detectors of infrared telescopes. Question: What is used for cooling detectors of infrared telescopes?

SOLUTION:
liquid nitrogen