籠の中

inside the basket

→ 籠
phrase Rare #24,237
inside the basket 籠 is read かご here and means “basket.” The particle after 籠の中 changes according to the sentence: に indicates location or existence, で indicates an action taking place there, and の connects it to a following noun.
JA: 籠の中に猫が入っています。
EN: There is a cat inside the basket.

彼女はすばやく子猫籠の中閉じ込めた

She quickly shut the kitten inside the basket.

籠の中には何が入ってるの

What's inside the basket?

籠の中には何もない

There is nothing in the cage.