YOU SAID:
Facts Are Opinions that were true but Opinions are what could be facts
INTO JAPANESE
事実は真実であった意見ですが、意見は事実である可能性があります
BACK INTO ENGLISH
Facts are opinions that were true, but opinions can be facts
INTO JAPANESE
事実は真実であった意見ですが、意見は事実であり得る
BACK INTO ENGLISH
Facts are opinions that were true, but opinions can be facts
That didn't even make that much sense in English.