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.

Input: Consider Input: Sentence: Co 2 is the molecular formula of carbon dioxide. Question: What is the molecular formula of carbon dioxide?

Output: co 2


Input: Consider Input: Sentence: The amount of energy required to begin a chemical reaction is known as the activation energy. Question: What is the amount of energy required to begin a chemical reaction known as?

Output: activation energy


Input: Consider Input: Sentence: Salts substances, which are distinct from acids and bases, form when ions form ionic bonds. Question: What substances, which are distinct from acids and bases, form when ions form ionic bonds?


Output: salts