(S (S (SBAR (IN Since) (S (BASENP (DT the) (JJ mobile) (NNS devices)) (VP (VBP have) (VP (VP (VBN become) (ADJP (JJ popular))) (PP (IN in) (BASENP (DT the) (NN presence))))))) (COMMA ,) (S (NP (BASENP (DT the) (NN supply)) (PP (IN of) (BASENP (NN DRAM) (NNS modules)))) (VP (VBZ is) (ADJP (ADVP (RB still)) (ADJP (JJ inadequate) (S (VP (TO to) (VP (VB meet) (BASENP (DT the) (NN demand)))))))))) (PERIOD .))