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[1]	fountain-head , beginning , origin , well-spring , origin , root , rootage , provenance , provenience , inception , start , outset , beginning , root(s) , commencement , rise
[2]	originator , author , creator , begetter
[3]	authority , seed , germ , documentation , informant , (Colloq) horse's mouth
[4]	informant
[5]	generator , author
[6]	reservoir
[7]	reference