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

[Q]: Sentence: 'a large building with a cross at the very top and a clock below it'. Count the occurrences of the word 'cross' in the given sentence.
[A]: 1


[Q]: Sentence: 'three people skiing on a snowy hill  thats almost empty'. Count the occurrences of the word 'thats' in the given sentence.
[A]: 1


[Q]: Sentence: 'there is a dog that looks sad sitting on a rug'. Count the occurrences of the word 'a' in the given sentence.
[A]:
2