The king wanted to choose the smartest and brave son-in-law for his daughter. Like all suitors, he declared that he had locked the princess and the two lions into three houses, and then wrote a sentence on the door of each of the three houses. Proposers went to open the door that they thought could be opened. The first door reads "Lion in this house" The second door says "Princess in the first room" The third door It read "Lion in this house". Only one of these three sentences can really be judged based on this. ['Princess in the first house.', 'Princess in the second house.', 'Princess in the third house.', 'All three houses are filled with lions.']