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

Input: Consider Input: Sentence: 'a smiling young man with a furry hood sitting on a train'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'there are people that are walking on the street'. Count the occurrences of the word 'that' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a room with wooden flooring with a  desk and two chairs on it'. Count the occurrences of the word 'a' in the given sentence.


Output: 2