The goal is simple: construct a set of statements to which someone may derive a conclusion from. It's preferable that the statements are true. (My true intent is to watch others miserably fail at using simple logic) I will start:
All men are animals. No animal, however, is a rock. There are rocks that weigh less than 5 pounds. Anything that weigh less than 5 pounds, weighs less than 10 pounds.
Therefore: solve
Edit: To which one may derive a conclusion from, in particular, has not been listed, and an overall conclusion may be ambiguous to some as to whether it be a multitude of conclusions from which may be derived, or a single conclusion, derived to include all elements of each premise for a single answer. It is the latter for which is intended in this game.
To make this game slightly more enjoyable for a broader audience, I shall alter it in the a form of a mystery game, to which one may deduce the clues that lie at present, for the purpose of solving its problem.
(Unless I have something better to do.)