(S (S (NP (BASENP (NN Two) (NNS gates)) (PP (IN of) (BASENP (DT the) (JJ Shia) (NN tomb)))) (VP (VBD were) (VP (VBN targeted) (PP (ADVP (RB shortly)) (PP (IN before) (NP (BASENP (DT the) (NNP Friday) (NN prayer)) (COLON -) (NP (BASENP (DT a) (NN time)) (SBAR (WHPP (IN at) (WHNP (WDT which))) (S (BASENP (PRP it)) (VP (MD would) (VP (VB be) (VP (VBN crowded))))))))))))) (PERIOD .))