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

Input: Consider Input: Sentence: 'a black train is on a train track near some foothills'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a pizza sitting on a metal tray covered in bbq sauce'. Count the occurrences of the word 'pizza' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'two lounge chairs beneath an umbrella on the sand at the beach'. Count the occurrences of the word 'an' in the given sentence.


Output: 1