Task: Description Logic Reasoning (ontology: Sciences/Conference)

Given the following Description Logic expression, determine whether it is satisfiable with respect to the local ontology module. Answer only true or false.

Expression:
∃is_given_by.(conference.has_contributions.some(Poster)) ⊓ ¬(∃is_given_by.(conference.has_contributions.some(Poster)))

True. true
False. false

Answer: false