You will be given a definition of a task first, then some input of the task.
In this task, you're given a context, a sentence,  and a character. The sentence describes an action or job of the given character. Also, the context provides more information about the sentence or the character. Your task is to write the character's motivation by doing a specific job, which is given in the sentence. You can use context to find the motivation; however, all the inputs do not provide context. Also, in some inputs, there can be zero motivation; output, 'None' in this case.

Context: A man had a heart attack while driving today. He was driving 70 miles an hour when it happened. He lost control of his car. He finally hit a passenger vehicle injuring three people. 
 Sentence: The man died at the scene due to the heart attack. 
 Character: Passenger vehicle
Output:
None