Input: Read this: Mexico City remains the only Latin American city to host the Olympic Games, having held the Summer Olympics in 1968, winning bids against Buenos Aires, Lyon and Detroit. (This too will change thanks to Rio, 2016 Summer Games host). The city hosted the 1955 and 1975 Pan American Games, the last after Santiago and São Paulo withdrew. The ICF Flatwater Racing World Championships were hosted here in 1974 and 1994. Lucha libre is a Mexican style of wrestling, and is one of the more popular sports throughout the country. The main venues in the city are Arena México and Arena Coliseo.
Question: What year did Mexico City first host the Pan America games?

Output: 1955


Input: Read this: Royal assent is the final stage in the legislative process for acts of the Scottish parliament. The process is governed by sections 28, 32, and 33 of the Scotland Act 1998. After a bill has been passed, the Presiding Officer of the Scottish Parliament submits it to the monarch for royal assent after a four-week period, during which the Advocate General for Scotland, the Lord Advocate, the Attorney General or the Secretary of State for Scotland may refer the bill to the Supreme Court of the United Kingdom (prior to 1 October 2009, the Judicial Committee of the Privy Council) for review of its legality. Royal assent is signified by letters patent under the Great Seal of Scotland in the following form which is set out in The Scottish Parliament (Letters Patent and Proclamations) Order 1999 (SI 1999/737) and of which notice is published in the London, Edinburgh, and Belfast Gazettes:
Question: Royal dissent is signified by what?

Output: unanswerable


Input: Read this: A defect in the human homologue of the Drosophila "period" gene was identified as a cause of the sleep disorder FASPS (Familial advanced sleep phase syndrome), underscoring the conserved nature of the molecular circadian clock through evolution. Many more genetic components of the biological clock are now known. Their interactions result in an interlocked feedback loop of gene products resulting in periodic fluctuations that the cells of the body interpret as a specific time of the day.[citation needed]
Question: What kind of clock does not have genetic functions?

Output: unanswerable


Input: Read this: In 2006, crime in Santa Monica affected 4.41% of the population, slightly lower than the national average crime rate that year of 4.48%. The majority of this was property crime, which affected 3.74% of Santa Monica's population in 2006; this was higher than the rates for Los Angeles County (2.76%) and California (3.17%), but lower than the national average (3.91%). These per-capita crime rates are computed based on Santa Monica's full-time population of about 85,000. However, the Santa Monica Police Department has suggested the actual per-capita crime rate is much lower, as tourists, workers, and beachgoers can increase the city's daytime population to between 250,000 and 450,000 people.
Question: How many officers are there in the Santa Monica Police Department?

Output:
unanswerable