(S (S (SBAR (S (PP (BASENP (NN それ)) (IN から)) (S (PP-SBJ (BASENP (NN 打ち上げ)) (IN は)) (VP (PP (BASENP (NN ２) (NN 月) (NN ２７) (NN 日)) (IN まで)) (VP (VBV 遅れ) (VP (MD た)))))) (INCON が)) (COMMA 、) (S (SBAR (S (PP-SBJ (BASENP (NNP ＮＡＳＡ)) (IN が)) (VP (PP (BASENP (NN 水素) (NN 制御) (NN 弁)) (IN で)) (VP (PP-OBJ (BASENP (NN 問題)) (IN を)) (VP (VP (NN 発見) (VBV し)) (VP (MD た)))))) (NN あと)) (S (PP (BASENP (NN ２) (NN 月) (NN ２０) (NN 日)) (IN に)) (S (ADVP (BASENP (PRE 無) (NN 期限)) (INRB に)) (S-NSBJ (VP (VBV 遅れ) (VP (MD た)))))))) (PERIOD 。))
それ から 打ち上げ は ２ 月 ２７ 日 まで 遅れ た が 、 NASA が 水素 制御 弁 で 問題 を 発見 し た あと ２ 月 ２０ 日 に 無 期限 に 遅れ た 。
It was then delayed until February 27 , but was then delayed indefinitely on February 20 after NASA discovered an issue with the hydrogen control valves .