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

Example Input: Sentence: 'A traffic sign sitting on the side of a road'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A crowd of people standing around a food truck'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'Three zebras eating green grass right next to each other'. Count the number of verbs in this sentence.
Example Output:
1