In this task, you need to count the number of nouns/verbs in the given sentence.

Input: Consider Input: Sentence: 'Many bicyclists wearing helmets race down the street'. Count the number of verbs in this sentence.

Output: 2


Input: Consider Input: Sentence: 'A bed in a bedroom with a heart shaped box on it'. Count the number of verbs in this sentence.

Output: 1


Input: Consider Input: Sentence: 'A subway train traveling down train tracks next to a street'. Count the number of verbs in this sentence.


Output: 1