An invitation may pertain-to a president.Logical formLearned from516 sentences. An invitation can be to (spring training).Logical formLearned from510 sentences. Invitations can be formal.Logical formLearned from467 sentences. An invitation may pertain-to a US-president.Logical formLearned from456 sentences. A letter can be constituted-of-or-filled-with invitation.Logical formLearned from439 sentences. A female may accept an invitation.Logical formLearned from429 sentences. A male may receive an invitation.Logical formLearned from406 sentences. Invitations may pertain-to persons.Logical formLearned from401 sentences. Response can be to an invitation.Logical formLearned from384 sentences. A person may get an invitation.Logical formLearned from382 sentences. Invitations can be to events.Logical formLearned from359 sentences. A person may accept an invitation.Logical formLearned from304 sentences. Membership can be by invitation.Logical formLearned from287 sentences. An invitation may pertain-to a chinese government.Logical formLearned from279 sentences. An invitation can be to a country.Logical formLearned from273 sentences.