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

Input: Consider Input: Sentence: 'a truck and a part of a disabled plane'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a baseball player holding a bat while playing a game'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a man standing and holding a tennis racket on court'. Count the occurrences of the word 'on' in the given sentence.


Output: 1