         Sentence 1: In China, ‘this person  inferred that the land was. formed by  erosion: of the mountains and by silt  deposition, what was his name?         Sentence 2: In China, the polymath  Shen: Kuo (1031-1095). formulated a  hypothesis for.the process of land  formation: based: on his’ observation  of fossil animal shells. in.a geological  stratum in a mountain hundreds of  miles: from: the ‘ocean, ‘he inferred  that the Jand was formed by erosion  7 the mountains and by deposition of  silt. : :    