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: Nucleic acids is defined by its sequence of nucleotides. Question: What is defined by its sequence of nucleotides?

Output: nucleic acids


Input: Consider Input: Sentence: Duplications (or amplifications ) lead(s) to multiple copies of a chromosomal region. Question: What leads to multiple copies of a chromosomal region?

Output: duplications (or amplifications )


Input: Consider Input: Sentence: A metallic bond is the force of attraction between a positive metal ion and valence electrons. Question: What is the force of attraction between a positive metal ion and valence electrons?


Output: metallic bond