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

Ex Input:
Sentence: 'An elephant that is walking on some dirt'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'A farm filled with horses at the base of a tall mountain'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'A group of people lined up in two rows for a photo, wearing tennis clothing and the front row holding tennis rackets'. Count the number of verbs in this sentence.

Ex Output:

3