YOU SAID:

a duck is a bird is a plane is a man is a superman

INTO JAPANESE

アヒルは鳥です飛行機は男ですスーパーマンです

BACK INTO ENGLISH

Ducks are birds Airplanes are men Superman

INTO JAPANESE

アヒルは鳥です飛行機は男性ですスーパーマン

BACK INTO ENGLISH

Ducks are birds Airplanes are men Superman