TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a man performs a flip trick on a skateboard'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a microwave a clothing iron and a candles make an unusual grouping'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a furry dog standing next to a fire hydrant'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION:
2