→ skos:prefLabel → "Открытая задача"@ru, "Open-ended Problem"@en
→ od:SouchkovDefinition → "A problem to which an algorithmic solution doesn’t exists. As a rule, conditions of an open-ended problems are fuzzy, which means that they either lack sufficient data, or the data is available in latent form, or there can be excessive data (information noise). The open-ended problem implies the possibility of different ways of solving the problem and different variants of its solution."@en