A missing link can be elusive.Logical formLearned from12 sentences. Causes can be elusive.Logical formLearned from12 sentences. A truth may remain elusive.Logical formLearned from12 sentences. A signal can be elusive.Logical formLearned from12 sentences. A target can be elusive.Logical formLearned from12 sentences. A settlement may prove elusive.Logical formLearned from12 sentences. A distinction can be elusive.Logical formLearned from12 sentences. A mushroom can be elusive.Logical formLearned from12 sentences. A (death toll) may remain elusive.Logical formLearned from12 sentences. A location may remain elusive.Logical formLearned from12 sentences. A political settlement may remain elusive.Logical formLearned from12 sentences. Common ground may remain elusive.Logical formLearned from12 sentences. Progress can be elusive.Logical formLearned from12 sentences. An accord can be elusive.Logical formLearned from12 sentences. A general can be elusive.Logical formLearned from11 sentences.