(S (S (BASENP (NNP Delta) (NNPS Airlines)) (VP (ADVP (RB also)) (VP (VBD canceled) (NP (BASENP (NNS flights)) (PP (PP (PP (IN in)) (CC and) (PP (IN out) (PP (IN of)))) (NP (NP (NP (NP (BASENP (NNP Washington)) (COMMA ,) (BASENP (NNP Philadelphia))) (COMMA ,) (BASENP (NNP Baltimore))) (COMMA ,) (BASENP (NNP Providence))) (CONJP (COMMA ,) (CC and)) (BASENP (NNP Hartford)))))))) (PERIOD .))