I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: Run, Fat Boy, Run Movie plot: Dennis Doyle (Simon Pegg) is about to marry Libby (Thandie Newton), his pregnant fiancee. However, he gets cold feet and runs away on the day of the wedding. Five years later, Dennis discovers that Libby, who has their son, Jake, has started seeing successful but arrogant Whit (Hank Azaria) and realizes that he has truly lost her. He finds out that Whit is running the Nike River Marathon in London, and to prove himself to his uncertain friends and, most importantly, Libby and his son, he decides to run the race himself. He receives motivation from his two "coaches", Gordon (Dylan Moran), a well-meaning slacker who is Libby's cousin and Dennis' best friend, who has made a hefty bet on Dennis succeeding, and Mr. Ghosh Dastidar (Harish Patel) his landlord, who uses unorthodox methods of training, such as using a spatula to spank him. Days before the race, Whit proposes to Libby at her birthday party. Libby accepts and this puts Dennis in a state of deep depression. As a result, he decides to quit the race. Meanwhile, Jake, who has formed a crush on a girl in his class, runs away upset when he discovers that she prefers another boy just because he has a ponytail. Dennis, upon being informed by a frantic Libby, tracks him down and explains to him that he will find many things he does not like in his life and he should just stand up to them and face them, rather than running away. Having made that mistake himself, he decides to race after all. Dennis starts the race alongside Whit, who informs Dennis that he intends to move Libby and Jake to Chicago, Illinois. Enraged, Dennis mocks Whit and they altercate for a while at the start of the race and, in their efforts to out-do each other, they catch up to and then overtake the professional runners, and suddenly Whit trips Dennis and severely injures him. Stretchers prepare to take Dennis to the hospital. Whit continues, but is taken to the hospital after feeling pain in his leg. Libby goes to the hospital to find Dennis, but only finds Whit, who claims loudly that his... My question: what makes dennis break his ankel ?
Answer:
Whit tripped Dennis.