Definition: Given a broad category, generate a trivia-type question based on a specific entity in that category. The question should be non-ambiguous. External resources such as Wikipedia could be used to obtain the facts.

Positive Example 1 -
Input: boat
Output: In 1907, which ill-fated liner of the Cunard Line made its maiden voyage?

Positive Example 2 -
Input: internet
Output: Who created Facebook in 2004?

Negative Example 1 -
Input: location
Output: Ben Collins was 'outed' in January 2009 as which mysterious TV character?

Negative Example 2 -
Input: people
Output: Which actress won the Best Actress Oscar for the 1989 film 'Driving Miss Daisy'?

Now complete the following example -
Input: metropolitan_transit
Output: 



Output:
Upminster and Ealing Broadway are respectively the eastern and western termini or which London Underground line?