Sentence examples similar to questionable conjectures from inspiring English sources

Question questionable sources.

This supposition is questionable.

So are wild conjectures.

"These are just conjectures.

Questionable calls were followed by questionable reactions.

Theories are (often) bold conjectures.

Questionable contracts?

"Highly questionable.

That is questionable.

Yet that is questionable.

To make questionable comparisons?