Question: The River Rat was the film debut of which actor or actress? 
Sentence (from "Martha Plimpton"): She has also appeared in "The Mosquito Coast" (1986), "Running on Empty" (1988), "Parenthood" (1989), "Samantha" (1992), "Raising Hope" (2010) and "Small Town Murder Songs" (2011).
Relevant evidence: No