The Five Platforms: Priya, Zara, Keiko, Luca, and Jonas

Five platforms stand in a row, numbered 1 to 5 from left to right. Each holds exactly one of each attribute, and no attribute repeats. Work out the full arrangement from these clues: 1. The traveler reading a guidebook is immediately to the right of the traveler reading a newspaper. 2. The traveler reading a guidebook is not the traveler with the backpack. 3. Luca is not the traveler bound for Porto. 4. The traveler bound for Kraków is immediately to the right of the traveler bound for Prague. 5. Keiko is immediately to the left of the traveler bound for Bruges. 6. The traveler reading a manual is immediately to the left of the traveler reading a newspaper. 7. The traveler bound for Porto is somewhere to the left of the traveler with the trunk. 8. The traveler reading a guidebook is immediately to the right of Jonas. 9. Keiko is not the traveler with the satchel. 10. The traveler bound for Prague is immediately to the left of the traveler holding a standard ticket. 11. Priya is immediately to the right of the traveler with the satchel. 12. The traveler with the guitar case is directly next to the traveler reading a guidebook. 13. The traveler holding a standard ticket is directly next to the traveler holding a day-return ticket. 14. The traveler bound for Bruges is not the traveler holding a sleeper ticket. 15. The traveler reading a guidebook is not the traveler holding a sleeper ticket. 16. The traveler holding a standard ticket is somewhere to the left of the traveler reading a novel. 17. The traveler with the duffel bag is immediately to the left of the traveler bound for Vienna. 18. The traveler with the backpack is immediately to the right of the traveler holding a first-class ticket.