(S (S (S (S (BASENP (DT The) (NN first)) (VP (VBD was) (SBAR (IN that) (S (S (VP (VBG pulling) (BASENP (DT the) (NN ring)))) (VP (MD could) (VP (VB require) (BASENP (JJ intense) (NN effort)))))))) (COMMA ,) (S (BASENP (DT the) (NN second)) (VP (SBAR (IN that) (S (BASENP (PRP it)) (VP (VBD was) (ADJP (JJ possible) (S (VP (TO to) (VP (VP (VB drop) (BASENP (DT the) (NN ring))) (PP (IN between) (BASENP (NNS seats))))))))))))) (CONJP (COMMA ,) (CC and)) (S (BASENP (DT the) (NN third)) (VP (SBAR (IN that) (S (NP (BASENP (NNS pilots)) (PP (IN in) (BASENP (JJ cold-weather) (NN gear)))) (VP (MD could) (VP (VB struggle) (S (VP (TO to) (VP (VB grasp) (BASENP (PRP it)))))))))))) (PERIOD .))