Complex sentence: The 1990 Baltimore Orioles season was a season in American baseball in which the Orioles finished fifth in the American League East with a record of 76 wins and 85 losses.
Split into simpler sentences: The 1990 Baltimore Orioles season was a season in American baseball. It involved the Orioles finishing 5th in the American League East with a record of 76 wins and 85 losses.