knees is it cap in the muffled chill .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NNS_0 knees)) (VP_4 (VBZ_0 is) (S_1 (NP_1 (PRP_1 it)) (VP_5 (VBP_0 cap) (PP_2 (IN_0 in) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 muffled)) (NN_1 chill))))))) (DOT_0 .)))