That experiment was a failure. ✬

We attempted the experiment. ✬

We were disappointed with the results of the experiment. ✬

The experiment was successful. ✬

He used pigeons in his experiment. ✬

The people for the experiment were chosen at random. ✬

The experiment failed. ✬

The experiment succeeded. ✬

The experiment ended in failure. ✬

That experiment led to a great discovery. ✬