The World's Billionaires
 , Microsoft founder Bill Gates had topped the list 18 of the past 24 years , while Amazon founder Jeff Bezos is ranked at the top for the first time and he became the first centibillionaire included in the ranking . 
<triplet> Microsoft <subj> Bill Gates <obj> founded by <triplet> Bill Gates <subj> Microsoft <obj> owner of <triplet> Amazon <subj> Jeff Bezos <obj> founded by <triplet> Jeff Bezos <subj> Amazon <obj> owner of