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

Ex Input:
Sentence: 'Two horses are walking a carriage through the streets'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'A couple of women walking down a street holding umbrellas'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'The family of elephants are walking in a straight line together'. Count the number of verbs in this sentence.

Ex Output:

1