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: Mutation is essential in order for evolution to occur because it increases genetic variation and the potential for individuals to differ. Question: What phenomenon is essential in order for evolution to occur because it increases genetic variation and the potential for individuals to differ?

SOLUTION: mutation

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

SOLUTION: lakes

PROBLEM: Sentence: If 10 grams of water are added to 5 grams of salt, 15 grams much salt water will be made. Question: If 10 grams of water are added to 5 grams of salt, how much salt water will be made?

SOLUTION:
15 grams