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

Example Input: Sentence: 'a white horse is gazing across the field'. Count the number of verbs in this sentence.
Example Output: 1

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 wet rain soaked street surrounded by buildings and trees'. Count the number of nouns in this sentence.
Example Output:
4