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

Example Input: Sentence: 'two small white motor boats sitting still in a lake'. Count the occurrences of the word 'boats' in the given sentence.
Example Output: 1

Example Input: Sentence: 'a comical frowning faced sculpture sits atop a surfboard next to a frowning man'. Count the occurrences of the word 'frowning' in the given sentence.
Example Output: 2

Example Input: Sentence: 'people getting on a bus in england near a town'. Count the occurrences of the word 'people' in the given sentence.
Example Output:
1