TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a man puts his head on his cat sitting on a suitcase'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a plate of food with bread fried crab cole slaw a lemon tomato pickle and lettuce on it'. Count the occurrences of the word 'of' in the given sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a woman walks down the street alone late at night'. Count the occurrences of the word 'down' in the given sentence.

SOLUTION:
1