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

Input: Consider Input: Sentence: 'a girl is holding a large kite on a grassy field'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a cat with a pensive look guarding its plate by a computer'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a shower with a glass door and a toilet in a bathroom'. Count the occurrences of the word 'a' in the given sentence.


Output: 4