Chairman may pertain-to oil.Logical formLearned from15 sentences. A person can be chairman of a summit.Logical formLearned from15 sentences. Chairman may pertain-to an (insurance company).Logical formLearned from15 sentences. A chairman may pertain-to an executive-committee.Logical formLearned from15 sentences. A death may pertain-to a chairman.Logical formLearned from15 sentences. A male can be chairman of a central-committee.Logical formLearned from15 sentences. A male can be (company chairman).Logical formLearned from15 sentences. A chairman may pertain-to a democratic-committee.Logical formLearned from15 sentences. A chairman may pertain-to a planning-commission.Logical formLearned from15 sentences. A male may serve as chairman of a (county committee).Logical formLearned from15 sentences. A chairman may pertain-to companies.Logical formLearned from15 sentences. A chairman may pertain-to a (state committee).Logical formLearned from15 sentences. A male may hold a position of chairman.Logical formLearned from15 sentences. A role can be as chairman of a board.Logical formLearned from15 sentences. A male can be chairman of a means-committee.Logical formLearned from15 sentences.