All deductive arguments have a premise and a conclusion. The premise and conclusion of the argument determine whether it is valid and sound. If the conclusion of an argument has to be true provided that the premise is true, the argument is valid. If the argument is valid and its premise is actually true, the argument is sound.
Therefore, a deductive argument that is sound and valid could be:
- In soccer, only the goalie may legally touch a live ball with her hands in the field of play.
- That woman caught a live ball in her hands and was not penalized.
- Therefore, she is one of the goalies.
This argument is sound because the premise is true (that only the goalie can legally handle the ball) and because the conclusion follows from the premise.