(S (S (BASENP (DT The) (NN attack)) (VP (VBZ is) (NP (BASENP (DT the) (JJS latest)) (PP (IN in) (NP (BASENP (DT a) (NN string)) (PP (IN of) (NP (BASENP (NNS incidents)) (VP (VP (VBG linking) (BASENP (NNP al-Shabab))) (PP (TO to) (NP (BASENP (JJ common) (JJ insurgent) (NNS tactics)) (VP (VBN used) (PP (IN by) (NP (BASENP (JJ Islamist) (NN terrorist) (NNS groups)) (PP (IN in) (NP (BASENP (JJ other) (NNS parts)) (PP (IN of) (BASENP (DT the) (NN world)))))))))))))))))) (PERIOD .))