A Google spokesperson told the BBC they were "isolated examples".

Some of the answers appeared to be based on Reddit comments or articles written by satirical site, The Onion.

But Google insisted the feature was generally working well.

"The examples we've seen are generally very uncommon queries, and aren’t representative of most people’s experiences," it said in a statement.

It said it had taken action where "policy violations" were identified and was using them to refine its systems.

That's precisely what they are saying.