A border can be porous.Logical formLearned from2 944 sentences. Borders can be porous.Logical formLearned from1 712 sentences. A defense can be porous.Logical formLearned from486 sentences. A frontier can be porous.Logical formLearned from314 sentences. A border can be porous.Logical formLearned from221 sentences. A structure can be porous.Logical formLearned from191 sentences. Borders can be porous.Logical formLearned from183 sentences. A nature can be porous.Logical formLearned from174 sentences. A surface can be porous.Logical formLearned from144 sentences. Surfaces can be porous.Logical formLearned from123 sentences. A limestone can be porous.Logical formLearned from111 sentences. A soil can be porous.Logical formLearned from99 sentences. A membrane can be porous.Logical formLearned from90 sentences. A southern border can be porous.Logical formLearned from89 sentences. A stone can be porous.Logical formLearned from85 sentences.