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

Example Input: Sentence: 'A hand holding a partially eaten doughnut hole'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'The tower of the building has a clock displayed on the front of it'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A brown horse grazing in its fenced in pen'. Count the number of verbs in this sentence.
Example Output:
2