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

Example Input: Sentence: 'An individual holding two grey flip phones open'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A group of volunteers enjoying a meal together'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'A man holding a skateboard watches another man ride a wave'. Count the number of verbs in this sentence.
Example Output:
3