YOU SAID:

so you're assuming trolls did this

INTO JAPANESE

それで、あなたはトロルがこれをしたと仮定します

BACK INTO ENGLISH

So you assume that Troll did this

INTO JAPANESE

それであなたはトロルがこれをしたと思います

BACK INTO ENGLISH

So you think Troll did this

INTO JAPANESE

だからあなたはトロルがこれをやったと思う

BACK INTO ENGLISH

So you think Troll did this