YOU SAID:

red spy is in the base

INTO JAPANESE

赤いスパイはベースにあります

BACK INTO ENGLISH

The red spy is on the base

INTO JAPANESE

赤いスパイがベースにあります

BACK INTO ENGLISH

There is a red spy on the base

INTO JAPANESE

基地に赤いスパイがいる

BACK INTO ENGLISH

There is a red spy at the base

INTO JAPANESE

基地に赤いスパイがいます

BACK INTO ENGLISH

There is a red spy at the base