Players have to play their cards to the board in such an order that they would form a reasonable sentence. If anyone plays such a card that it turns the sentence unreasonable you could challenge that particular play. The player that played that card must now tell you what the sentence means. You will now have to turn that unreasonable sentence into reasonable. You could even describe some impossible situation where this particular sentence would make sense. After the explanation others have to vote if the explanation is reasonable enough for the interpreter to get points. - BoardGameGeek