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

Sentence: 'a giant clock mounted on a building'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'the man with many graphic novels on a display table is on a cell phone'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a grey cat sitting next to a pair of shoes'. Count the occurrences of the word 'a' in the given sentence.

2