A person may have a std.Logical formLearned from134 sentences. Stds may undergo a transmission.Logical formLearned from80 sentences. Stds may undergo a prevention.Logical formLearned from68 sentences. Stds may undergo a treatment.Logical formLearned from59 sentences. Protection can be against stds.Logical formLearned from58 sentences. Risk can be for stds.Logical formLearned from56 sentences. Rates can be constituted-of-or-filled-with stds.Logical formLearned from48 sentences. A std may pertain-to a person.Logical formLearned from44 sentences. Stds can be bacterial.Logical formLearned from41 sentences. A person may get a std.Logical formLearned from36 sentences. Treatment can be for stds.Logical formLearned from36 sentences. Stds can be curable.Logical formLearned from34 sentences. Persons can be with stds.Logical formLearned from29 sentences. Stds may pertain-to a person.Logical formLearned from28 sentences. A person may have stds.Logical formLearned from27 sentences.