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

[EX Q]: Sentence: 'a man is holding a camera on a rig while skateboarding in a parking lot'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 4

[EX Q]: Sentence: 'a red and whit jet blue sky and clouds'. Count the occurrences of the word 'and' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man dressed in uniform touching a subway door with a full subway'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3