 The five problems at the individual contest were about spatial deictics in Aralle-Tabulahan (Austronesian), Luwian hieroglyphic script (Indo-European), Kunuz Nubian (Eastern Sudanic) morphosyntax, Iatmül (Sepik) semantics and Jaqaru (Aymaran) morphology.The team problem involved matching over 100 utterances in Taa (Tuu) to their IPA transcriptions.IOL 15 was held from July 31 to August 4, 2017, at Dublin City University in Dublin, Ireland.