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: Bicarbonate ions protects tissues of the central nervous system from changes in ph. Question: What protects tissues of the central nervous system from changes in ph?

SOLUTION: bicarbonate ions

PROBLEM: Sentence: A wall of rocks or concrete a called a groin. Question: What is a wall of rocks or concrete called?

SOLUTION: groin

PROBLEM: Sentence: Evidence allows theories to be widely accepted. Question: What allows theories to be widely accepted?

SOLUTION:
evidence