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

Input: Consider Input: Passage: Are you on the basketball team? Are you a cheerleader? Do you play an instrument in the band? Your niche would be your role or place in the school. Organisms also each have their own niche in the ecosystem. Is an organism a producer or a consumer? How does the organism interact with other organisms? Is the organism involved in any symbiotic relationships?. Answer: niche

Output: An organism's unique role in the ecosystem is called its what?

Input: Consider Input: Passage: There are no forces of attraction or repulsion between gas particles . Attractive forces are responsible for particles of a real gas condensing together to form a liquid. It is assumed that the particles of an ideal gas have no such attractive forces. The motion of each particle is completely independent of the motion of all other particles. Answer: superscripts

Output: Which measure indicates the number of electrons in a given sublevel?

Input: Consider Input: Passage: Arteries carry blood away from the heart, while veins return blood to the heart. Answer: arteries
Output: What carries blood away from the heart?