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

Example Input: Sentence: 'A variety of shots of a man doing skateboarding tricks'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A few cars in a parking next to a small green van'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'A photo of a Delta airplane taking off into the air'. Count the number of nouns in this sentence.
Example Output:
3