Why do ryan eyes get red and itchy when he walk into robert’s house

 Because he is allergic to the cat.

Explanation:

I am assuming that this is referring to a passage in this case, it is straight forward in the response. When he walks into the house his eyes water and itch therefore making it seem like he's allergic to the cat.

often a noun phrase is just a noun or a pronoun:

people like to have money.

i am tired.

it is getting late.

i cannot see any of the statement