TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a woman walking a large brown dog next to a tennis ball'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a wall has a plaque with a city and numbers on it'. Count the occurrences of the word 'numbers' in the given sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a skate park with a young man on a skate board going down a concrete beam'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION:
4