build a json-ld representation of the following text by using ONLY the information provided in the text: NAME_1 was born in Pretoria, South Africa, and briefly attended at the University of Pretoria before moving to Canada at age 18, acquiring citizenship through his Canadian-born mother. Two years later, he matriculated at Queen's University and transferred to the University of Pennsylvania, where he received NAME_2's degrees in economics and physics. He moved to California in 1995 to attend Stanford University. After two days, he dropped out and, with his brother NAME_3, co-founded the online city guide software company Zip2. In 1999, Zip2 was acquired by Compaq for $307 million and NAME_1 co-founded X.com, a direct bank. X.com merged with Confinity in 2000 to form PayPal, which eBay acquired for $1.5 billion in 2002. NAME_1 received an EB-5 investor green card in 1997, which led to his U.S. citizenship in 2002.[8]