YOU SAID:

the cat sits in a tree

INTO JAPANESE

猫は木の中に座っている

BACK INTO ENGLISH

Cats are sitting in a tree

INTO JAPANESE

猫は木に座っている

BACK INTO ENGLISH

Cats are sitting on trees

INTO JAPANESE

猫は木々に座っている

BACK INTO ENGLISH

Cats are sitting in trees

INTO JAPANESE

猫は木々に座っている

BACK INTO ENGLISH

Cats are sitting in trees