A barrier can be protective.Logical formLearned from33 sentences. (Antibody levels) can be protective.Logical formLearned from33 sentences. A quality can be protective.Logical formLearned from33 sentences. A rubber can be protective.Logical formLearned from33 sentences. A bandage can be protective.Logical formLearned from33 sentences. Nutrients can be protective.Logical formLearned from33 sentences. A frame can be protective.Logical formLearned from33 sentences. A perimeter can be protective.Logical formLearned from32 sentences. A (force field) can be protective.Logical formLearned from32 sentences. Respirators can be protective.Logical formLearned from32 sentences. Containers can be protective.Logical formLearned from32 sentences. A claim can be protective.Logical formLearned from32 sentences. A container can be protective.Logical formLearned from32 sentences. An antioxidant can be protective.Logical formLearned from32 sentences. A sac can be protective.Logical formLearned from32 sentences.