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

Example Input: Sentence: 'A tennis player getting ready to hit the ball'. Count the number of verbs in this sentence.
Example Output: 2

Example Input: Sentence: 'A couple of cows laying on the grass next to a man wearing bicycle gear'. Count the number of verbs in this sentence.
Example Output: 2

Example Input: Sentence: 'a double decker bus sits parked next to other cars'. Count the number of verbs in this sentence.
Example Output:
2