(S (S (S (BASENP (DT This)) (VP (VBD prompted) (S (BASENP (DT the) (NNS authorities)) (VP (TO to) (VP (VP (VP (VB ground) (BASENP (NNP Adam) (NNP Air))) (PP (IN for) (BASENP (NN three) (NNS months)))) (PP (IN after) (BASENP (DT a) (JJ regular) (NN evaluation)))))))) (COMMA ,) (SBAR (WHPP (IN after) (WHNP (WDT which))) (S (BASENP (PRP they)) (VP (MD may) (VP (VB be) (VP (ADVP (RB permanently)) (VP (VBN shut) (PRT (RP down))))))))) (PERIOD .))