that was hard for me to warm up to 
(ROOT (S (NP (DT that)) (VP (VBD was) (ADJP (JJ hard)) (SBAR (IN for) (S (NP (PRP me)) (VP (TO to) (VP (VB warm) (PRT (RP up)) (PP (IN to)))))))))
(ROOT (S (NP (DT )) (VP (VBD ) (ADJP (JJ )) (SBAR (IN ) (S (NP (PRP )) (VP (TO ) (VP (VB ) (PRT (RP )) (PP (IN )))))))))