Question: Where is eurovision 2018 going to be held?
Disambiguated questions and answers: question: Where is the venue the eurovision 2018 going to be held?
Where is the location the eurovision 2018 going to be held?
answer: MEO Arena
Pavilhão Atlântico
Altice Arena
Lisbon, Portugal
Natural Questions answer: Lisbon (from the Wikipedia article "Eurovision Song Contest 2018")