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

Sentence: 'a lady that is at a sink in a kitchen'. Count the occurrences of the word 'a' in the given sentence.
3

Sentence: 'a bucket is sitting on the floor of a bathroom'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'an open door and a cat inside a house'. Count the occurrences of the word 'a' in the given sentence.

2