Meta-graphs Extracted From Amazon Rate M1:(U M2:(U Buy(B1) Buy B B吗B1 Belongto Belong tor 3 Cat B M4:(U Buy Belongto 4 ( Brd Belongto B Write M5:(U1 R,Mention) Mention Write R U,Check-in B Write R le Write Check-in R R B A Brd: brand of itemMeta-graphs Extracted From Amazon Brd 38 : brand of item