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

Example Input: Sentence: 'THERE IS A BLACK AND WHITE IMAGE OF A ZEBRA EATING GRASS'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A group of men going up for a frisbee'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'a stone oven with a fire and some pizza'. Count the number of verbs in this sentence.
Example Output:
0