Countries may sign a convention.Logical formLearned from20 sentences. A (convention session) may pertain-to night.Logical formLearned from20 sentences. A person may skip a convention.Logical formLearned from20 sentences. Accord can be with provisions of a convention.Logical formLearned from20 sentences. A convention may pertain-to a journalists-association.Logical formLearned from20 sentences. A convention may pertain-to a band.Logical formLearned from20 sentences. Obligations can be under a convention.Logical formLearned from20 sentences. Part can be in a national convention.Logical formLearned from20 sentences. A convention may begin.Logical formLearned from20 sentences. A phase may pertain-to a convention.Logical formLearned from19 sentences. A role may pertain-to a convention.Logical formLearned from19 sentences. A host may pertain-to a convention.Logical formLearned from19 sentences. A guest can be at a convention.Logical formLearned from19 sentences. A (fan convention) can be annual.Logical formLearned from19 sentences. A convention can be scheduled.Logical formLearned from19 sentences.