Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: Based on the passage, they may represent individual people is one conclusion archaeologists have reached about the statues.

Output: Based on the passage, what is one conclusion archaeologists have reached about the statues?

Input: Consider Input: Pangaea began breaking apart 250 million years ago.

Output: How many millions of years ago did pangaea begin breaking apart?

Input: Consider Input: The cardiovascular system transports many substances to and from cells throughout the body.
Output: What system transports many substances to and from cells throughout the body?