To be sure, not all auctions are rip-offs.
( ( To ( be sure ) ) ( , ( ( not ( all auctions ) ) ( ( are rip-offs ) . ) ) ) )
(ROOT (S (S (VP (TO To) (VP (VB be) (ADJP (JJ sure))))) (, ,) (NP (RB not) (DT all) (NNS auctions)) (VP (VBP are) (ADJP (JJ rip-offs))) (. .)))
Not all auctions sell high priced goods.
( ( Not ( all auctions ) ) ( ( sell ( ( high priced ) goods ) ) . ) )
(ROOT (S (NP (RB Not) (DT all) (NNS auctions)) (VP (VBP sell) (NP (ADJP (RB high) (VBN priced)) (NNS goods))) (. .)))