Answer the following question: Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: Who was murdered? Title: True Grit Movie plot: Mattie Ross (Hailee Steinfeld), the narrator and protagonist, explains that her father was murdered by Tom Chaney (Josh Brolin) when she was 14 years old. While collecting her father's body in Fort Smith, Arkansas, Mattie asks the local sheriff about the search for Chaney. He tells her that Chaney has fled with "Lucky" Ned Pepper and his gang into Indian Territory, where the sheriff has no authority, so she inquires about hiring a Deputy U.S. Marshal. The sheriff gives three recommendations, and Mattie chooses Rooster Cogburn. Cogburn initially rebuffs her offer, not believing she has the money to hire him. She raises the money by aggressively horse-trading with Colonel Stonehill. Texas Ranger LaBoeuf arrives in town after pursuing Chaney for the murder of a Texas State Senator. LaBoeuf proposes to team up with Cogburn, but Mattie refuses his offer. She wishes Chaney to be hanged in Arkansas for her father's murder, not in Texas for killing the senator. Mattie also insists on traveling with Cogburn but he leaves without her, having gone with LaBoeuf to apprehend Chaney and split the reward. After being refused passage on the ferry that conveyed Cogburn and LaBoeuf, Mattie crosses the river on horseback. LaBoeuf expresses his displeasure by birching Mattie with a stick, but Cogburn eventually allows Mattie to accompany them. After a dispute over their respective service with the Confederate States of America, Cogburn ends their arrangement and LaBoeuf leaves to pursue Chaney on his own. Cogburn and Mattie meet a trail doctor who directs them to an empty dugout for shelter. They find two outlaws, Quincy and Moon, and interrogate them. Quincy insists they have no information about the Pepper gang, but eventually Moon divulges what he knows; Quincy fatally stabs Moon, and Cogburn shoots Quincy dead. Before dying, Moon says Pepper and his gang will be returning for fresh horses that night. LaBoeuf arrives at the dugout and is confronted by the Pepper gang. Cogburn, hiding on the hillside with Mattie, shoots two...
Answer:
Texas State Senator