    Sentence 1: The blue-chip: Dow. Jones  industrial average .D Ji was- down 63.09  points , or 0.68 percent, at 9,270:70 .    Sentence 2: In ‘the firse hour: of trading, the  Dow Jones: industrial average was.up 12.98.  OF 0.1 percent. at'9,346.77. |    