A formula can be rigid.Logical formLearned from123 sentences. A political system can be rigid.Logical formLearned from122 sentences. Criteria can be rigid.Logical formLearned from115 sentences. Policies can be rigid.Logical formLearned from114 sentences. Categories can be rigid.Logical formLearned from114 sentences. A bar can be rigid.Logical formLearned from112 sentences. An orthodoxy can be rigid.Logical formLearned from110 sentences. A line can be rigid.Logical formLearned from107 sentences. A definition can be rigid.Logical formLearned from106 sentences. Systems can be rigid.Logical formLearned from106 sentences. An enforcement can be rigid.Logical formLearned from105 sentences. A posture can be rigid.Logical formLearned from104 sentences. A support can be rigid.Logical formLearned from104 sentences. A separation can be rigid.Logical formLearned from102 sentences. A (caste system) can be rigid.Logical formLearned from102 sentences.