A person may prevent a std.Logical formLearned from2 sentences. Persons may have an epidemic of stds.Logical formLearned from2 sentences. Stds can be specific to humans.Logical formLearned from2 sentences. Persons may get (std tests).Logical formLearned from2 sentences. A guy may have a std.Logical formLearned from2 sentences. Stds can be real.Logical formLearned from2 sentences. A partner may have a std.Logical formLearned from2 sentences. Stds can be integrated.Logical formLearned from2 sentences. Some stds may be identified.Logical formLearned from2 sentences. Stds may have an impact.Logical formLearned from2 sentences. Some stds can be preventable.Logical formLearned from2 sentences. Condoms may prevent stds.Logical formLearned from2 sentences. Women may have a history of stds.Logical formLearned from2 sentences. Women may be infected with stds.Logical formLearned from2 sentences. (Latex condoms) may prevent some stds.Logical formLearned from2 sentences.