You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: MODERN LANGUAGES 
Clue: An estimated 100,000-plus people speak this language whose nouns have no gender & end with -o
esperanto

Category: MUSEUMS 
Clue: The Conspiracy Museum opened in this U.S. city in 1995
dallas

Category: 19th CENTURY GOVERNORS 
Clue: To date, he's the only person to be elected governor of 2 different states

sam houston