Sarah listened in all seriousness to the advice and thanked the Ranger for it, especially the part with only coaxing and perhaps not battling got her thinking before she recollected her thoughts about the earlier question about the league. 
She had read about the other leagues in other regions and noticed not a lot had special rules like the type restriction on the Rorie Islands, one day perhaps she would spectate some other leagues but first, she wanted to focus on this one. The other leagues seemed easier with no restrictions but she couldn't know for sure yet. 

Sarah glanced at the brochure, she had seen it and of course and read it, there was nothing wrong with the brochure and the information was short but correct but she enjoyed explaining it nevertheless. 

"The League is themed around the four basic elements. The gyms on Rhando, Indelgy, Ornitan and Resto each represent one of the basic elements, Earth, Wind, Water and Fire. Because it is the theme it is ruled that trainers can only use the types that correspond with the basic elements so ground, flying, water and fire pokemon types are only allowed in the Pokemon League on Evoru. It has been a very long tradition really and the restriction makes it more challenging in my opinion as you can't just randomly catch and use pokemon, you have to think before you act. You know, at first, they only allowed single type pokemon that fit the rules. It's relatively recent in the history of the Rorie Leagues that dual types that have at least one of the four types were allowed. The gyms do allow other pokemon types in their battles though. And you have to be careful, pokemon that evolve and loose one of the allowed types can't continue the battle." 

Even though Sarah was more than willing to start a monologue about the entire history of the league and the islands she didn't know if the Ranger was that into local history so she kept at the summary for now with only sporadic sidetracks.