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

Ex Input:
Sentence: 'Two people walk down an city sidewalk carrying umbrellas'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'A man and a woman walking towards a food vendor that is across the street'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'A black and white cat lying on top of a teddy bear'. Count the number of nouns in this sentence.

Ex Output:

4