(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 。))
高 さ １０ km の 灰 の 雲 が ７４０ × １８０ km の 範囲 に 拡がっ た 。
A 10km high ash cloud spread over an area of 740 by 180 km .