An elusive quality of a smile may be explained by a fact.Logical formLearned from3 sentences. A conjecture can be elusive.Logical formLearned from3 sentences. A formula may remain elusive.Logical formLearned from3 sentences. Enzymes can be elusive.Logical formLearned from3 sentences. A political settlement may prove elusive.Logical formLearned from3 sentences. Consensus may proven elusive.Logical formLearned from3 sentences. A growth can be elusive.Logical formLearned from3 sentences. Causes can be elusive.Logical formLearned from3 sentences. Changes can be elusive.Logical formLearned from3 sentences. A weapon can be elusive.Logical formLearned from3 sentences. A quotient can be elusive.Logical formLearned from3 sentences. A hole-in-one can be elusive.Logical formLearned from3 sentences. Individuality can be elusive.Logical formLearned from3 sentences. A closure can be elusive.Logical formLearned from3 sentences. A waterway can be elusive.Logical formLearned from3 sentences.