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

Example Input: Sentence: 'A picture of a picture of a man wearing a tie'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'Pedestrians stand at a crosswalk waiting for the light to change'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'A woman on skis coming down a slope'. Count the number of verbs in this sentence.
Example Output:
1