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.

Example Input: Sentence: Metallic bonds hold together positive metal ions and their valence electrons. Question: What types of bonds hold together positive metal ions and their valence electrons?
Example Output: metallic bonds

Example Input: Sentence: Protons and neutrons are made of quarks, which are fundamental particles of matter. Question: A fundamental particle of matter, protons and neutrons are made of these?
Example Output: quarks

Example Input: Sentence: When exposed to ultraviolet, some substances, such as minerals, glow in characteristic visible wavelengths, in a process called fluorescence. Question: When exposed to ultraviolet, some substances, such as minerals, glow in characteristic visible wavelengths, a process called this?
Example Output:
fluorescence