(S (S (ADVP (BASENP (NN Two) (NNS weeks)) (RB ago)) (COMMA ,) (S (BASENP (DT the) (JJ Yemeni) (NN government)) (VP (VP (VBD started) (BASENP (NNP Operation) (NNP Scorched) (NNP Earth))) (S (VP (TO to) (VP (VB try) (S (VP (TO to) (VP (VB exterminate) (BASENP (DT the) (NNS insurgents))))))))))) (PERIOD .))