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

Example Input: Sentence: 'A man standing on a tennis court holding a tennis racquet'. Count the number of verbs in this sentence.
Example Output: 2

Example Input: Sentence: 'A water fountain shooting up air in front of a building'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A small white dog wearing a black hat'. Count the number of verbs in this sentence.
Example Output:
1