YOU SAID:
sponge bob is dead and so is my little boy billy
INTO JAPANESE
スポンジボブは死んでいる、そして私の男の子ビリーも死んでいる
BACK INTO ENGLISH
SpongeBob is dead, and my boy Billy is also dead
INTO JAPANESE
スポンジボブは死んでおり、私の少年ビリーも死んでいます
BACK INTO ENGLISH
SpongeBob is dead and my boy Billy is dead
INTO JAPANESE
スポンジボブは死んでいて、私の少年ビリーは死んでいます
BACK INTO ENGLISH
SpongeBob is dead and my boy Billy is dead
That didn't even make that much sense in English.