Input: Read this: Bill & Melinda Gates Foundation (or the Gates Foundation, abbreviated as BMGF) is the largest private foundation in the world, founded by Bill and Melinda Gates. It was launched in 2000 and is said to be the largest transparently operated private foundation in the world. The primary aims of the foundation are, globally, to enhance healthcare and reduce extreme poverty, and in America, to expand educational opportunities and access to information technology. The foundation, based in Seattle, Washington, is controlled by its three trustees: Bill Gates, Melinda Gates and Warren Buffett. Other principal officers include Co-Chair William H. Gates, Sr. and Chief Executive Officer Susan Desmond-Hellmann.
Question: What does the principal officer Melinda Gates control?

Output: unanswerable

Input: Read this: In the early part of the 20th century, San Diego hosted two World's Fairs: the Panama-California Exposition in 1915 and the California Pacific International Exposition in 1935. Both expositions were held in Balboa Park, and many of the Spanish/Baroque-style buildings that were built for those expositions remain to this day as central features of the park. The buildings were intended to be temporary structures, but most remained in continuous use until they progressively fell into disrepair. Most were eventually rebuilt, using castings of the original facades to retain the architectural style. The menagerie of exotic animals featured at the 1915 exposition provided the basis for the San Diego Zoo. During the 1950s there was a citywide festival called Fiesta del Pacifico highlighting the area's Spanish and Mexican past. In the 2010s there was a proposal for a large-scale celebration of the 100th anniversary of Balboa Park, but the plans were abandoned when the organization tasked with putting on the celebration went out of business.
Question: What festival was celebrated in the 1960s in recognition of the city's Mexican and Spanish past?

Output: unanswerable

Input: Read this: Cotton lisle is a finely-spun, tightly twisted type of cotton that is noted for being strong and durable. Lisle is composed of two strands that have each been twisted an extra twist per inch than ordinary yarns and combined to create a single thread. The yarn is spun so that it is compact and solid. This cotton is used mainly for underwear, stockings, and gloves. Colors applied to this yarn are noted for being more brilliant than colors applied to softer yarn. This type of thread was first made in the city of Lisle, France (now Lille), hence its name.
Question: How is color perceived to be for lisle in comparison to softer yarns?

Output: more brilliant

Input: Read this: The Chinese word is (pinyin: jidu tu), literally "Christ follower." The two characters now pronounced Jidu in Mandarin Chinese, were originally pronounced Ki-To in Cantonese as representation of Latin "Cristo".[citation needed] In Vietnam, the same two characters read Co oc, and a "follower of Christianity" is a tin o Co oc giao.
Question: Now pronounced Jidu in Cantonese, how were the characters originally pronounced?

Output:
unanswerable