(S (S (NP (NP (DT The) (ADJP (BASENP (NN fifteen) (NN year)) (JJ old))) (BASENP (NNP Andrey) (NNP Scherbakov))) (VP (VP (VP (VBD spent) (BASENP (NN two) (NNS hours))) (PP (IN in) (NP (BASENP (DT the) (NN wheel) (NN well)) (PP (IN of) (BASENP (DT the) (NN airplane)))))) (PP (IN at) (NP (BASENP (JJ extreme) (NN temperature)) (PP (IN of) (BASENP (SYM −) (NN 50) (SYM °) (NN centigrade))))))) (PERIOD .))