which character did she play?
Lucy
I Am Sam
Sam Dawson (Sean Penn), a man with an intellectual disability, is the single father of Lucy (Dakota Fanning) 
who played rachel in war of the worlds Dakota Fanning who were her co-stars in the movie? Tom Cruise, Justin Chatwin, Miranda Otto, and Tim Robbins which character did the first actor you mentioned play? Divorced longshoreman Ray Ferrier what was his relationship with the first character? She is his daughter who composed the soundtrack for this film? John Williams can you name some other films he has composed for? "Star Wars" saga, "Jaws", "Close Encounters of the Third Kind", "Superman" is he adept at playing musical instruments as well? Williams served as Principal Conductor, who is he married to? Barbara Ruick did they have children? Yes, they had three children: Jennifer, Mark Towner Williams, and Joseph what was the debut role of the actress you mentioned in the beginning? A guest role in the NBC prime-time drama "ER" and what was her first movie role? "I Am Sam"
wiki:5329903
I Am Sam [SEP] Plot
Sam Dawson (Sean Penn), a man with an intellectual disability, is the single father of Lucy (Dakota Fanning) who is an 8-year-old second grader following their abandonment by her mother, a homeless woman. Sam is well-adjusted and has a supportive group of friends with disabilities, as well as a kind, agoraphobic neighbor, Annie (Dianne Wiest), who takes care of Lucy when Sam cannot. Though Sam provides a loving place for precocious Lucy, she soon surpasses his mental ability. Other children bully her for having an intellectually disabled father, and she becomes too embarrassed to accept that she is more advanced than he is.