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

Sentence: 'a teddy bear is strapped into a seat'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'two zebras playing with each others furry ears'. Count the occurrences of the word 'two' in the given sentence.
1

Sentence: 'a young boy on skis in a thick snowy ground'. Count the occurrences of the word 'a' in the given sentence.

2