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

Example Input: Sentence: 'A street has a traffic light, a parked bicycle, and a car on it'. Count the number of verbs in this sentence.
Example Output: 2

Example Input: Sentence: 'A spray paint covered fire hydrant on a side walk'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'Skier on the top of a ski course being followed by another rider'. Count the number of verbs in this sentence.
Example Output:
1