Islands can be on a river.Logical formLearned from18 sentences. An island may be created.Logical formLearned from18 sentences. A fortification can be on an island of a country.Logical formLearned from18 sentences. An island can be in a century.Logical formLearned from18 sentences. An island may appear.Logical formLearned from18 sentences. A string can be constituted-of-or-filled-with volcanic islands.Logical formLearned from18 sentences. An island can be vulnerable.Logical formLearned from18 sentences. Persons can be on some islands.Logical formLearned from18 sentences. An island may surrender.Logical formLearned from18 sentences. (Island groups) can be outlying.Logical formLearned from18 sentences. An aspect may pertain-to an island.Logical formLearned from18 sentences. Islands can be a part of a country.Logical formLearned from18 sentences. An island may have a climate.Logical formLearned from18 sentences. Finances may pertain-to an island.Logical formLearned from18 sentences. An island may take a name.Logical formLearned from18 sentences.