Materials can be hard.Logical formLearned from369 sentences. Materials can be unpublished.Logical formLearned from369 sentences. A material can be free for use.Logical formLearned from364 sentences. A material can be flexible.Logical formLearned from362 sentences. Materials can be requested.Logical formLearned from361 sentences. Materials can be crystalline.Logical formLearned from361 sentences. A material can be religious.Logical formLearned from360 sentences. Properties may pertain-to materials.Logical formLearned from358 sentences. Some material can be suitable for children.Logical formLearned from358 sentences. Material may be used in a report.Logical formLearned from357 sentences. Fissile material can be for nuclear weapons.Logical formLearned from356 sentences. A (patent material) can be red.Logical formLearned from355 sentences. Links can be to material.Logical formLearned from353 sentences. Materials can be used.Logical formLearned from352 sentences. Material may undergo a presentation.Logical formLearned from352 sentences.