(S (S (BASENP (NNS Investigations)) (VP (VP (VBD focused) (PP (IN on) (NP (BASENP (DT the) (JJ heavy) (NN reliance)) (PP (IN of) (BASENP (JJ unpaid) (NN labor)))))) (PP (IN in) (NP (NP (BASENP (DT the) (NN company) (POS 's)) (NN workforce)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (BASENP (NNP Landmark) (NNP Education)) (VP (VP (VBZ calls) (S (QT (DQL ``) (BASENP (NNS assistants)) (DQR '')))) (CC and) (VP (VBZ deems) (S (BASENP (NNS volunteers))))))))))) (PERIOD .))