general_fact: 10347 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 10347 is an unremarkable number.
trivia: 10347 is an uninteresting number.
historical_date: April 29th is the day in 1953 that the first U.S. experimental 3D-TV broadcast showed an episode of Space Patrol on Los Angeles ABC affiliate KECA-TV.