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

Input: Consider Input: Sentence: 'A man standing on a tennis court holding a tennis racquet'. Count the number of verbs in this sentence.

Output: 2


Input: Consider Input: Sentence: 'A jumbo jet airplane flying through the air'. Count the number of verbs in this sentence.

Output: 1


Input: Consider Input: Sentence: 'a baseball player in a black shirt is throwing a ball'. Count the number of verbs in this sentence.


Output: 1