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: PSYCHOLOGY TERMS 
Clue: This 2-word term has its origins in a hostage-taking that followed the botched 1973 Norrmalmstorg bank robbery
stockholm syndrome

Category: PUBLICATIONS 
Clue: In 1889 a daily New York news summary called the "Customers' Afternoon Letter" became this publication

the wall street journal