"I have no information on which opinion could be based."

He said the opinion was based on a review committee's study.

The opinion is based on some crucial ideas that are developed in the report.

None of the assumptions the judge based his opinion on were actually fact.

"Your opinion of him and his treacherous nature was based on what?"

The Court also based its opinion in part on two earlier rulings.

The judge also made clear that his opinion was based on the possibility of future advances.

The opinions we form are based on individual perceptions, something science has yet to fully understand.

You base your opinion on public health and financial cost grounds, but never mention human rights.

My opinion, based on knowing the man better than anyone?