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

Example Input: Sentence: 'A teddy bear sitting on top of a metal bench'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A wooden wardrobe sitting next to a black trunk'. Count the number of nouns in this sentence.
Example Output: 2

Example Input: Sentence: 'A skateboarder demonstrates jumping skills on an outdoor course'. Count the number of verbs in this sentence.
Example Output:
1