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

Input: Consider Input: Sentence: 'a truck and luggage sitting on a cart by the dining saloon car of a train'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'close up of a garden with shrubs growing'. Count the occurrences of the word 'of' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a cat in a fridge by a jug of milk'. Count the occurrences of the word 'a' in the given sentence.


Output: 3