Task: Question Answering
Input (English): Passage: A recently widowed Englishwoman, Mary Panton, is staying at the villa of some wealthy friends outside of Florence, Italy in 1938. After meeting her old friend Sir Edgar Swift at a party celebrating the Munich Agreement, she is surprised when he proposes marriage to her the next day. She asks for a few days to think the proposal over, and he agrees to meet with her on his return from Rome.
That evening, at a party hosted by her friend, the Princess San Ferdinando, she meets a married American man named Rowley Flint, who has a reputation for being a rogue. A violinist arrives to entertain the guests but is so terrible that the Princess has him removed. Out of sympathy Mary leaves him a large tip. Rowley drives Mary home, but on the way stops at a small church, where she confesses that her husband was an abusive alcoholic who died in a car crash, leaving her destitute. Rowley tries to kiss her but Mary slaps him and drives away. She is so flustered that she almost collides with a young man in the road, who turns out to be the violinist from the restaurant. Seeing that he is poor and hungry, she invites him up to the house for a meal. He tells her that his name is Karl Richter and that he is a refugee from Austria, where he was persecuted for resisting the Nazi government. When the young man declares how beautiful Mary is, she has sex with him out of sympathy. He leaves the next morning. 
Question: Who does Mary give a large tip to?
Output (English): violinist.