structures But surfers forced with the boy .
(ROOT_0 (S_0 (ATS_3 (NP_1 (ATNP_0 (NP_4 (NNS_1 structures)) (CC_0 But)) (NNS_0 surfers)) (VP_4 (VBD_2 forced) (PP_0 (IN_1 with) (NP_5 (DT_0 the) (NN_2 boy))))) (DOT_0 .)))