(S (S (S (NP (BASENP (NN Dichloroacetate)) (PRN (COMMA ,) (NP (BASENP (DT a) (NN drug)) (VP (ADVP (RB generally)) (VP (VBN used) (S (VP (TO to) (VP (VB treat) (BASENP (JJ rare) (JJ metabolic) (NNS disorders)))))))) (COMMA ,))) (VP (VBZ has) (VP (VBN shown) (NP (BASENP (DT the) (NN potential)) (SBAR (S (VP (TO to) (VP (VB assist) (PP (IN in) (NP (BASENP (DT the) (NN treatment)) (PP (IN of) (NP (NP (NP (BASENP (NN brain)) (COMMA ,) (BASENP (NN lung))) (CONJP (COMMA ,) (CC and)) (BASENP (NN breast))) (NNS cancers))))))))))))) (COMMA ,) (S (NP (BASENP (NNS researchers)) (PP (IN at) (NP (NP (BASENP (DT the) (NNP University)) (PP (IN of) (BASENP (NNP Alberta)))) (PP (IN in) (NP (BASENP (NNP Edmonton)) (COMMA ,) (BASENP (NNP Canada))))))) (VP (VBP say)))) (PERIOD .))