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

Example Input: Sentence: 'A group of elephants gathered around their watering hole'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A clay plate next to a vase with a plant in it'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'A dog and a horse interacting with a man'. Count the number of nouns in this sentence.
Example Output:
3