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

Example Input: Sentence: 'An elephant that is walking on some dirt'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'Various street signs that read Danforth avenue'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A group of cause walkers walking on a closed road in the rain'. Count the number of nouns in this sentence.
Example Output:
5