(S (S (BASENP (NNP Adam)) (VP (VP (VBD compared) (NP (BASENP (DT all) (NNS fields)) (PP (IN in) (BASENP (DT the) (NN database))))) (S (VP (TO to) (VP (VB find) (NP (NP (BASENP (DT the) (NNS areas)) (PP (IN of) (BASENP (JJ missing) (NN information)))) (SBAR (WHPP (IN from) (WHNP (WDT which))) (S (BASENP (PRP he)) (VP (VBD devised) (BASENP (NN 20) (NNS hypotheses))))))))))) (PERIOD .))