(S (S (S (BASENP (PRP They)) (VP (VP (VBD compared) (BASENP (DT the) (NN bone))) (PP (TO to) (NP (BASENP (JJ dental) (NNS records)) (VP (VP (VBN given) (PP (TO to) (BASENP (PRP them)))) (PP (IN by) (NP (BASENP (NNP Natalee) (POS 's)) (NNS father)))))))) (COMMA ,) (SBAR (WHPP (IN from) (WHNP (WDT which))) (S (BASENP (PRP they)) (VP (VBD confirmed) (SBAR (S (S (BASENP (DT the) (DT the) (NN bone)) (VP (VP (VBD was) (RB not)) (NP (BASENP (DT that)) (PP (IN of) (BASENP (NNP Natalee)))))) (COMMA ,) (SBAR (IN although) (S (BASENP (PRP it)) (VP (VBD was) (ADJP (JJ human))))))))))) (PERIOD .))