(S (S (S (S (BASENP (JJ Australian) (NN airline) (NNP Qantas)) (VP (VBZ has) (VP (VP (VBN returned) (NP (BASENP (DT the) (JJ first)) (PP (IN of) (NP (BASENP (PRPD its) (NN fleet)) (PP (IN of) (BASENP (NNP Airbus) (NNPS A380s))))))) (PP (TO to) (BASENP (NN service)))))) (COMMA ,) (SBAR (IN after) (S (NP (BASENP (DT all) (NN six)) (PP (IN of) (BASENP (DT the) (QT (DQL ``) (NN superjumbo) (DQR '')) (NN aircraft)))) (VP (VBD were) (VP (VP (VBN grounded) (ADVP (BASENP (NN three) (NNS weeks)) (RB ago))) (PP (VBG following) (NP (BASENP (DT one) (NN aircraft) (POS 's)) (BASENP (NN engine) (JJ sustaining) (JJ extensive) (JJ midair) (NN damage))))))))) (COLON ;) (S (BASENP (PRP it)) (VP (VP (VP (VBD landed) (ADVP (RB safely))) (PP (IN in) (BASENP (NNP Singapore)))) (PP (IN without) (BASENP (NN injury)))))) (PERIOD .))