A person may speak at a conference.Logical formLearned from212 sentences. A (conference call) may pertain-to a person.Logical formLearned from211 sentences. A conference may help.Logical formLearned from211 sentences. A (news conference) can be in a US-city.Logical formLearned from210 sentences. A topic may pertain-to a conference.Logical formLearned from209 sentences. A national conference can be annual.Logical formLearned from208 sentences. A speech can be at a conference.Logical formLearned from208 sentences. A US-president may say in a (news conference).Logical formLearned from208 sentences. A (press conference) may pertain-to yesterday.Logical formLearned from207 sentences. Participants may pertain-to a conference.Logical formLearned from207 sentences. An international conference may open.Logical formLearned from207 sentences. Information can be on conferences.Logical formLearned from207 sentences. A conference can be preparatory.Logical formLearned from206 sentences. Conferences can be weekly.Logical formLearned from205 sentences. Preparations can be for a conference.Logical formLearned from204 sentences.