Elon Musk , the founder of PayPal , created the rocket company SpaceX , and John Carmack , the creator of computer games like Doom and Quake , has been testing rocket designs through his company , Armadillo Aerospace near Dallas .
PayPal /business/company/founders Elon Musk
John Carmack /business/person/company Armadillo Aerospace
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PayPal
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Elon Musk
PERSON
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John Carmack
PERSON
Armadillo Aerospace
ORGANIZATION
/business/person/company