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

Example Input: Sentence: 'A large variety of umbrella of various colors that are high in the air'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'One person tossing a frisbee to another person in front of some trees'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'a line of red double decker buses driving down the road'. Count the number of nouns in this sentence.
Example Output:
4