A lens may pertain-to a scientist.Logical formLearned from13 sentences. A lens can be creative.Logical formLearned from13 sentences. A lens can be open.Logical formLearned from13 sentences. A lens may be covered.Logical formLearned from13 sentences. A lens may be implanted.Logical formLearned from13 sentences. A lens may be installed.Logical formLearned from12 sentences. A lens may be mounted on some (frame body).Logical formLearned from12 sentences. A lens may be moved.Logical formLearned from12 sentences. A refractive index may pertain-to a lens.Logical formLearned from12 sentences. A lens can be transparent.Logical formLearned from12 sentences. A lens may be shaped.Logical formLearned from12 sentences. A (lens approximation) can be thick.Logical formLearned from12 sentences. A lens may undergo an opacification.Logical formLearned from12 sentences. A (portrait lens) may pertain-to a person.Logical formLearned from12 sentences. A female may look into a lens.Logical formLearned from12 sentences.