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

Example Input: Sentence: 'Many bicyclists wearing helmets race down the street'. Count the number of verbs in this sentence.
Example Output: 2

Example Input: Sentence: 'a close up of a plate of food with broccoli'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'A tennis player looks at a tennis ball as she lifts up a tennis racket'. Count the number of nouns in this sentence.
Example Output:
6