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

[EX Q]: Sentence: 'a pizza is on a cooling rack on a counter'. Count the occurrences of the word 'on' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a couple of skis sticking out of a snow covered ground'. Count the occurrences of the word 'of' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a turtle eating plans from a stone bowl'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
2