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

Sentence: 'a man with glasses a collar shirt and a tie on'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a group of people pose together holding their skis in their hands'. Count the occurrences of the word 'a' in the given sentence.
1

Sentence: 'a truck that has pictures painted on it sitting in front of a store'. Count the occurrences of the word 'a' in the given sentence.

2