TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a truck and a part of a disabled plane'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a boat carries a smaller motorboat that is hitched on the back'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a small dog sitting on top of a couch cushion near a window'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION:
3