Question: What is the official name of the league in which Arata Izumi plays?
Sentence (from "Tytsjerksteradiel"): The other villages in Trynwâlden are also named after Tryn's children: Oentsjerk (Oene), Gytsjerk (Giete), Readtsjerk (Reade), Aldtsjerk (Âlde), Ryptsjerk (Rype).
Relevant evidence: No