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

[EX Q]: Sentence: 'a couple wearing a suit and red scarf pose for a picture near a christmas tree'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 4

[EX Q]: Sentence: 'a truck tipped over next to a guard rail'. Count the occurrences of the word 'to' in the given sentence.
[EX A]: 1

[EX Q]: Sentence: 'two sheep standing on a lush green hillside covered in grass'. Count the occurrences of the word 'hillside' in the given sentence.
[EX A]:
1