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

Input: Consider Input: Sentence: 'a woman in high heels walking a dog on a leash'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'three adult giraffe stand near water in the woods'. Count the occurrences of the word 'water' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a man riding skis across a snow covered ground'. Count the occurrences of the word 'skis' in the given sentence.


Output: 1