YOU SAID:
the watermelon fungus ate my pet chicken
INTO JAPANESE
スイカ菌は私のペットの鶏を食べました
BACK INTO ENGLISH
Watermelon ate my pet chicken
INTO JAPANESE
スイカは私のペットチキンを食べました
BACK INTO ENGLISH
Watermelon ate my pet chicken
That didn't even make that much sense in English.