instruction:
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.
question:
Category: ENDS IN "I" 
Clue: Stephen S. Wise was a well-known one; Isaac Bashevis Singer was the son of one
answer:
a rabbi


question:
Category: THE WHITE HOUSE 
Clue: When electric lights were installed in 1891, this pres., afraid of being shocked, wouldn't operate the switches
answer:
benjamin harrison


question:
Category: THE STOCK MARKET 
Clue: These open-end investment "funds"  began in the U.S. in the 1920s & now hold over $5 trillion
answer:

mutual funds