A shell can be interactive.Logical formLearned from243 sentences. A base may pertain-to a shell.Logical formLearned from238 sentences. A shell can be thick.Logical formLearned from232 sentences. Shells may pertain-to persons.Logical formLearned from223 sentences. A barrage can be constituted-of-or-filled-with shells.Logical formLearned from217 sentences. A length may pertain-to a shell.Logical formLearned from216 sentences. (Shell casings) can be spent.Logical formLearned from215 sentences. A shell can be plastic.Logical formLearned from209 sentences. Shells can be heavy.Logical formLearned from204 sentences. A width may pertain-to a shell.Logical formLearned from197 sentences. A shell may pertain-to a building.Logical formLearned from190 sentences. A shell can be spherical.Logical formLearned from187 sentences. Thousands can be constituted-of-or-filled-with shells.Logical formLearned from183 sentences. A shell can be defensive.Logical formLearned from182 sentences. Shells may land.Logical formLearned from182 sentences.