A constitution can be valid.Logical formLearned from10 sentences. Biomarkers can be valid.Logical formLearned from10 sentences. A common-law marriage can be valid.Logical formLearned from10 sentences. A technique can be valid.Logical formLearned from10 sentences. A surrogate can be valid.Logical formLearned from10 sentences. An (access card) can be valid.Logical formLearned from10 sentences. A same-sex marriage can be valid.Logical formLearned from10 sentences. A (health insurance) can be valid.Logical formLearned from10 sentences. An (inspection certificate) can be valid.Logical formLearned from10 sentences. (Medical insurance) can be valid.Logical formLearned from10 sentences. (Test results) can be valid.Logical formLearned from10 sentences. A (selection tool) can be valid.Logical formLearned from10 sentences. A fact can be valid.Logical formLearned from10 sentences. A core can be valid.Logical formLearned from10 sentences. (Code words) can be valid.Logical formLearned from10 sentences.