Input: Article: In the months before the attack on Pearl Harbor, Kwajalein Atoll was the administrative center of the Japanese 6th Fleet Forces Service, whose task was the defense of the Marshall Islands.

Now answer this question: On what atoll was the 6th Fleet Forces Service based?

Output: Kwajalein

Input: Article: In general relativity, a vanishing stress-energy tensor implies, through Einstein field equations, the vanishing of all the components of the Ricci tensor. Vacuum does not mean that the curvature of space-time is necessarily flat: the gravitational field can still produce curvature in a vacuum in the form of tidal forces and gravitational waves (technically, these phenomena are the components of the Weyl tensor). The black hole (with zero electric charge) is an elegant example of a region completely "filled" with vacuum, but still showing a strong curvature.

Now answer this question: Who's equations  helped to imply vanishing of the Ricci tensor?

Output: Einstein

Input: Article: The Houston area is a leading center for building oilfield equipment. Much of its success as a petrochemical complex is due to its busy ship channel, the Port of Houston. In the United States, the port ranks first in international commerce and tenth among the largest ports in the world. Unlike most places, high oil and gasoline prices are beneficial for Houston's economy, as many of its residents are employed in the energy industry. Houston is the beginning or end point of numerous oil, gas, and products pipelines:

Now answer this question: What has the Houston ship channel served to promote into success?

Output:
petrochemical complex