However, in 1987 they were able to support their claim.

Maybe so, but it is hard to find much evidence to support his claim.

You may need it as evidence to support your claim.

He did not provide any evidence to support this claim.

If there were evidence to support their claims, we'd have it.

However, there are several data points that support such claims.

No evidence has been found to support the claim that he was married.

A state investigation found no evidence to support her claim.

No hard evidence, however, has been produced to support such claims.

The report was published in June 2007 and found no evidence to support the claim.