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

Example Input: Sentence: 'A bike stands alone beside a rock wall'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'A boy in a wheel chair on a tennis court'. Count the number of nouns in this sentence.
Example Output: 5

Example Input: Sentence: 'A person holding an umbrella in front of a building'. Count the number of verbs in this sentence.
Example Output:
1