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

[Q]: Sentence: 'A man brushing his teeth with a tooth brush'. Count the number of nouns in this sentence.
[A]: 4


[Q]: Sentence: 'a couple of birds that are sitting next to each other'. Count the number of nouns in this sentence.
[A]: 2


[Q]: Sentence: 'A train traveling down racks next to  houses'. Count the number of nouns in this sentence.
[A]:
3