YOU SAID:
Ya know, I didn't like the pizza that they ate there last night.
INTO JAPANESE
ええ、私は彼らが昨夜そこで食べたピザが好きではなかった。
BACK INTO ENGLISH
Yeah, I didn't like the pizza they ate there last night.
INTO JAPANESE
うん、私は彼らが昨夜そこで食べたピザが好きではなかった。
BACK INTO ENGLISH
Yeah, I didn't like the pizza they ate there last night.
That didn't even make that much sense in English.