An invitation may pertain-to a mayor.Logical formLearned from13 sentences. A female may refuse an invitation.Logical formLearned from13 sentences. A flood can be constituted-of-or-filled-with invitations.Logical formLearned from13 sentences. A US-president may refuse an invitation.Logical formLearned from13 sentences. An appreciation can be for an invitation.Logical formLearned from13 sentences. (Membership invitations) may pertain-to an international-political-entity.Logical formLearned from13 sentences. Invitations can be in a world-city.Logical formLearned from13 sentences. An invitation may pertain-to a military regime.Logical formLearned from13 sentences. An invitation may pertain-to a foreign ministry.Logical formLearned from13 sentences. An invitation can be from a president of a country.Logical formLearned from12 sentences. An invitation may pertain-to a chief.Logical formLearned from12 sentences. An invitation may pertain-to a saudi government.Logical formLearned from12 sentences. An official visit can be at an invitation of a president.Logical formLearned from12 sentences. An invitation can be from a political-leader.Logical formLearned from12 sentences. An invitation can be by a president.Logical formLearned from12 sentences.