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: Beta decay occurs when an unstable nucleus emits a beta particle and energy. Question: What occurs when an unstable nucleus emits a beta particle and energy?

SOLUTION: beta decay

PROBLEM: Sentence: Exchange occurs directly with the external environment in unicellular organisms type of organisms. Question: Exchange occurs directly with the external environment in what type of organisms?

SOLUTION: unicellular organisms

PROBLEM: Sentence: A student should use a balance to compare the masses of two small rocks. Question: Which tool should a student use to compare the masses of two small rocks?

SOLUTION:
balance