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

Ex Input:
Sentence: 'We are looking down at the skis of a skier riding a ski lift'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'A man on a scooter sits beside a stop sign'. Count the number of nouns in this sentence.

Ex Output:
3


Ex Input:
Sentence: 'Black and white photograph of a group of people playing tennis'. Count the number of verbs in this sentence.

Ex Output:

1