Before playwright Suzan-Lori Parks penned the Pulitzer Prize-winning “Top Dog/Underdog,” she wrote “The America Play.” The abstract narrative centers around a character called The Foundling Father, a grave digger who impersonates Abraham Lincoln in a novelty performance that allows people to act out the role of the President’s assassin. “The America Play” is currently in production at Greensboro’s Triad Stage UpStage Cabaret.