高さ１０kmの灰の雲が７４０×１８０kmの範囲に拡がった。
(S (S (PP-SBJ (NP (PP (NP (BASENP (JJO 高) (NN さ)) (BASENP (NN １０) (NN ｋｍ))) (IN の)) (NP (PP (BASENP (NN 灰)) (IN の)) (NN 雲))) (IN が)) (VP (PP (NP (PP (BASENP (NN ７４０) (CC ×) (NN １８０) (NN ｋｍ)) (IN の)) (NN 範囲)) (IN に)) (VP (VBV 拡がっ) (VP (MD た))))) (PERIOD 。))