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

Ex Input:
Passage: Figure 6.11 The frictional force supplies the centripetal force and is numerically equal to it. Centripetal force is perpendicular to velocity and causes uniform circular motion. The larger the F c , the smaller the radius of curvature r and the sharper the curve. The second curve has the same v , but a larger. Answer: centripetal force

Ex Output:
What force is perpendicular to velocity and causes uniform circular motion?

Ex Input:
Passage: The largest known virus, called mimivirus, is so large that scientists first mistook it for a bacterium. It was first discovered in amoeba, in 1992, and was identified as a virus in 2003. Scientists believe that mimivirus may cause certain types of pneumonia in humans. The core contains DNA, with the majority of the DNA in genes, and only 10% DNA of unknown function ("junk" DNA). Answer: mimivirus

Ex Output:
What is the largest known virus?

Ex Input:
Passage: Scientists are using telescopes to search for other planets that may have conditions favorable for life. The places they can look are near our solar system in our galaxy. Answer: telescopes

Ex Output:
What do scientists use to search other planets suitable for living?