Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: When magma heats groundwater, it may come to the surface as a hot spring or a geyser.

Answer: When magma heats groundwater, it may come to the surface as a hot spring or a what?

Question: The bird ancestor that lived in trees developed wings, which is commonly associated with birds.

Answer: The bird ancestor that lived in trees developed what feature commonly associated with birds?

Question: After observing several dogs running, students ask the following question: do dogs with long hair run faster than dogs with short hair? measure the speeds and hair lengths of many dogs can the students best answer their question.

Answer:
After observing several dogs running, students ask the following question: Do dogs with long hair run faster than dogs with short hair? How can the students best answer their question?