(S (S (S (PP-SBJ (NP (S-REL (PP (BASENP (NN １９１２) (NN 年)) (IN に)) (S-NSBJ (VP (VP (NN 存在) (VBV し)) (VP (MD た))))) (NN 氷)) (IN が)) (VP (PP (PP (BASENP (NN ２０００) (NN 年)) (IN まで)) (IN に)) (VP (PP (BASENP (NN ８５) (NN ％)) (IN まで)) (VP (ADVP (RB 徐々に)) (VBV 減り))))) (COMMA 、) (S (PP (PP (BASENP (NN ２００７) (NN 年)) (IN まで)) (IN に)) (S (PP-SBJ (NP (PP (NP (PP (BASENP (NN ２０００) (NN 年)) (IN の)) (NN 量)) (IN の)) (NP (PP (BASENP (NN 別)) (IN の)) (BASENP (NN ２６) (NN ％)))) (IN が)) (VP (VBV 減っ) (VP (MD た)))))) (PERIOD 。))
1912 年 に 存在 し た 氷 が 2000 年 まで に 85 ％ まで 徐々に 減り 、 2007 年 まで に 2000 年 の 量 の 別 の 26 ％ が 減っ た 。
The ice that was present in 1912 gradually decreased by 85 % by 2000 , and by 2007 another 26 % of the amount in 2000 .