Some volcanic island can be off a coast of a world-city.Logical formLearned from4 sentences. A peak may record volcanic tremors.Logical formLearned from4 sentences. Gas may bubble through volcanic ash.Logical formLearned from4 sentences. Presence can be volcanic.Logical formLearned from4 sentences. Volcanic ash may crash_down on some villages.Logical formLearned from4 sentences. A next day may spot a volcanic island.Logical formLearned from4 sentences. Volcanic ash may undergo a fall.Logical formLearned from4 sentences. A coating can be constituted-of-or-filled-with volcanic ash.Logical formLearned from4 sentences. A cavern can be volcanic.Logical formLearned from4 sentences. A chain can be constituted-of-or-filled-with some volcanic islands.Logical formLearned from4 sentences. Volcanic activity may increase in some weeks.Logical formLearned from4 sentences. A volcanic cone can be icy.Logical formLearned from4 sentences. A volcanic activity may subside.Logical formLearned from4 sentences. A town may be demolished by a volcanic eruption.Logical formLearned from4 sentences. A volcanic lake can be through a canal.Logical formLearned from4 sentences.