Given a scientific passage and an answer, generate a question for the given answer.

Input: Consider Input: Passage: Bonds break and reform during chemical reactions. Reactants and products contain the same atoms, but they are rearranged during the reaction, so reactants and products are different substances. Answer: reactants

Output: In a chemical reaction, what, in general, comes together in order to form a product?

Input: Consider Input: Passage: Images in a plane mirror are reversed left and right but not reversed top and bottom. Answer: plane mirror

Output: Images in what type of mirror are reversed left and right but not reversed top and bottom?

Input: Consider Input: Passage: Beginning with Mendel's pea plants, genetics has become one of the most important fields of biology. Genetics discusses genetics, from Mendel's pea plants to current ethical issues associated with this field. The completion of The Human Genome Project is one of the landmark scientific events of the last 50 years. Human genetics affects many, if not every, field of medicine. Technologies associated with genetics are involved in developing products to make our lives better, but have raised a number of ethical, legal and social issues. Answer: human genome project
Output: What is the name of the project concerning genetics that is one of the landmark scientific events of the last 50 years?