(S (S (PP-SBJ (BASENP (NN これ)) (IN は)) (VP (PP (NP (S-REL (PP (BASENP (NNP キリマンジャロ)) (IN で)) (S-NSBJ (VP (VP (VP (NN 測定) (VBO さ)) (VP (VBV れ))) (VP (MD た))))) (NP (PP (BASENP (NN 氷)) (IN の)) (NN 量))) (IN で)) (VP (NP (PP (ADVP (RB 初めて)) (IN の)) (NN こと)) (VP (MDV だっ) (VP (MD た)))))) (PERIOD 。))
これ は キリマンジャロ で 測定 さ れ た 氷 の 量 で 初めて の こと だっ た 。
This was the first time that the volume of the ice in Kilimanjaro was measured .