In this task, you need to count the occurrences of the given word in the given sentence.

[Q]: Sentence: 'a girl in blue shit and shorts holding a frisbee in grassy area'. Count the occurrences of the word 'in' in the given sentence.
[A]: 2


[Q]: Sentence: 'a man in black shirt playing a game with a nintendo wii controller'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a train is barreling down the train tracks'. Count the occurrences of the word 'train' in the given sentence.
[A]:
2