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

Input: Consider Input: Sentence: 'a man sitting on a bench in a lobby'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a living room full and untidy with many household items'. Count the occurrences of the word 'a' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'an open appliance door has a white sign reading stop attached to it'. Count the occurrences of the word 'has' in the given sentence.


Output: 1