(SINV (SINV (QT (DQL ``) (QTC (S (NP (NP (BASENP (DT The) (NN advantage)) (PP (IN of) (BASENP (NN solar)))) (PERIOD ...)) (VP (VBZ is) (SBAR (IN that) (S (BASENP (PRP it)) (VP (VP (VBZ is) (ADJP (RB much) (JJR cheaper))) (CC and) (VP (VBZ requires) (BASENP (JJR less) (NN maintenance)))))))) (COMMA ,)) (DQR '')) (SINV (VP (VBD said)) (NP (BASENP (NNP Omar) (NNP Habib)) (COMMA ,) (BASENP (NNP UNICEF) (NN communication) (NN specialist))))) (PERIOD .))