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

Example Input: Sentence: 'A tall clock tower flanked by two trees'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'A boat flies its flag while sailing just off a pier'. Count the number of verbs in this sentence.
Example Output: 2

Example Input: Sentence: 'a man in a suit standing in front of a stove'. Count the number of verbs in this sentence.
Example Output:
1