(S (S (PP (VBG According) (PP (TO to) (NP (NP (BASENP (NNP ExplorersWeb.com) (POS 's)) (NN founder)) (COMMA ,) (BASENP (NNP Tom) (NNP Sjogren))))) (COMMA ,) (S (BASENP (DT the) (NN trio)) (VP (VBD erased) (NP (NP (BASENP (DT the) (JJ previous) (NN record)) (PP (IN of) (NP (NP (BASENP (NN 39) (NNS days)) (COMMA ,) (BASENP (NN 7) (NNS hours))) (CC and) (BASENP (NN 49) (NNS minutes))))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (VP (VBN set) (PP (IN by) (NP (BASENP (NNP American) (NNP Todd) (NNP Carmichael)) (COMMA ,) (NP (BASENP (DT the) (JJ first) (NNP American)) (SBAR (S (VP (TO to) (VP (VP (VP (VP (VB cross) (BASENP (NNP Antarctica))) (PP (TO to) (BASENP (DT the) (NNP South) (NNP Pole)))) (ADVP (RB alone))) (COMMA ,) (PP (PP (IN on) (BASENP (NN foot))) (CC and) (PP (IN with) (BASENP (DT no) (NN assistance))))))))))))))))))) (PERIOD .))