(S (S (S (BASENP (DT Some) (NNS schools)) (VP (VP (VBD stayed) (ADJP (JJ closed))) (PP (IN on) (BASENP (NNP Wednesday))))) (COMMA ,) (SBAR (IN while) (S (BASENP (NNS others)) (VP (VBD shut) (PP (IN at) (BASENP (NN lunchtime))))))) (PERIOD .))