query: Who created Whatsapp?
passage: WhatsApp
WhatsApp was founded in 2009 by Brian Acton and Jan Koum, both former employees of Yahoo!. After Koum and Acton left Yahoo! in September 2007, the duo traveled to South America to take a break from work.[8] At one point, they applied for jobs at Facebook but were rejected.[8] For the rest of the following years Koum relied on his $400,000 savings from Yahoo!.
passage: International entrepreneur rule
Jan Koum, Co-Founder WhatsApp