Question: "What was used as the solution?" Context: "The tide-predicting machine invented by Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location." Answer:
Ans: The tide-predicting machine

Question: "Which founding celebrity investor was married to Moore?" Context: "Schwarzenegger was a founding celebrity investor in the Planet Hollywood chain of international theme restaurants (modeled after the Hard Rock Cafe) along with Bruce Willis, Sylvester Stallone and Demi Moore. Schwarzenegger severed his financial ties with the business in early 2000. Schwarzenegger said the company had not had the success he had hoped for, claiming he wanted to focus his attention on "new US global business ventures" and his movie career." Answer:
Ans: Willis

Question: "Which of the following is not found in the second biotechnology district: a drug-testing clinic, a mixed-use structure or a telephone building?" Context: "A second biotechnology district is being planned for the median strip on Frontage Road, on land cleared for the never-built Route 34 extension. As of late 2009, a Pfizer drug-testing clinic, a medical laboratory building serving Yale New Haven Hospital, and a mixed-use structure containing parking, housing and office space, have been constructed on this corridor. A former SNET telephone building at 300 George Street is being converted into lab space, and has been so far quite successful in attracting biotechnology and medical firms." Answer:
Ans: telephone building

Question: "What was of interest?" Context: "Although little was officially announced by Chinese authorities about the signals of the new system, the launch of the first COMPASS satellite permitted independent researchers not only to study general characteristics of the signals, but even to build a COMPASS receiver." Answer:
Ans: general characteristics