What is the fine-grained topic of the following text: MiSK Art 2018 event of MiSK Institute of Arts, one of the initiatives of Prince Mohammed bin Salman bin Abdulaziz Foundation (MiSK), has started with the participation of more than 250 artists in Riyadh during the period from 30 October to 3 November. Only return the topic.
MiSK Art 2018 event