Started two years ago , with Mark Zuckerberg , a Harvard undergraduate , as a co-founder , Facebook first restricted membership to people who had e-mail addresses issued by a college or university .
Mark Zuckerberg /business/person/company Facebook
Facebook /business/company/founders Mark Zuckerberg
VBD CD NNS RB , IN NNP NNP , DT NNP NN , IN DT NN , NNP RB JJ NN TO NNS WP VBD JJ NNS VBN IN DT NN CC NN .
Mark Zuckerberg
PERSON
Facebook
ORGANIZATION
/business/person/company
Facebook
ORGANIZATION
Mark Zuckerberg
PERSON
/business/company/founders