A stamp can be in the world.Logical formLearned from13 sentences. Stamps may undergo an exhibition.Logical formLearned from13 sentences. A (rubber stamp) may pertain-to a country.Logical formLearned from13 sentences. Other persons may collect stamps.Logical formLearned from13 sentences. A stamp may sell for some cents.Logical formLearned from12 sentences. Stamps may pertain-to a US-city.Logical formLearned from12 sentences. Stamps can be ones.Logical formLearned from12 sentences. Stamps can be black.Logical formLearned from12 sentences. A series can be constituted-of-or-filled-with some (postage stamps).Logical formLearned from12 sentences. Stamps of a country may be used.Logical formLearned from12 sentences. A copy may pertain-to a stamp.Logical formLearned from12 sentences. Stamps may undergo a shipment.Logical formLearned from12 sentences. An issue can be constituted-of-or-filled-with stamps.Logical formLearned from12 sentences. Stamps may be issued on a month.Logical formLearned from12 sentences. A stamp may pertain-to a nobleman.Logical formLearned from12 sentences.