(S (S (BASENP (NNP Thursday)) (VP (VBD was) (NP (NP (BASENP (DT the) (JJ second) (NN day)) (PP (IN of) (NP (BASENP (NNS attacks)) (PP (IN on) (BASENP (NNP UN) (NNS targets)))))) (SBAR (IN after) (S (BASENP (NN three) (NNP UN) (NNS schools) (NN housing) (NNS refugees)) (VP (VBD were) (VP (VP (VBN bombed) (PP (IN on) (BASENP (NNP Tuesday)))) (COMMA ,) (S (VP (VBG killing) (BASENP (QP (RB over) (NN 50)) (NNS civilians))))))))))) (PERIOD .))