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

Example Input: Passage: Although most of a cell's DNA is contained in the cell nucleus, mitochondria have their own DNA. Mitochondria also have the machinery to manufacture their own RNAs and proteins. The human mitochondrial DNA sequence has 16,569 base pairs encoding 37 total genes: 22 tRNA genes, 2 rRNA genes, and 13 peptide genes. The 13 mitochondrial peptides in humans are integrated into the inner mitochondrial membrane, along with proteins encoded by nuclear genes. Answer: nucleus
Example Output: Where is most of the cell's dna contained?

Example Input: Passage: Destructive interference in waves occurs when two troughs overlap. Answer: two troughs
Example Output: Destructive interference in waves occurs when what things overlap?

Example Input: Passage: Large ocean currents can have a big impact on the climate of nearby coasts. The Gulf Stream, for example, carries warm water from near the equator up the eastern coast of North America. Look at the map in Figure below . It shows how the Gulf Stream warms both the water and land along the coast. Answer: large ocean currents
Example Output:
Which factor has a big impact on coastal climates?