Volcanic ash can be from a country.Logical formLearned from83 sentences. A formation can be volcanic.Logical formLearned from82 sentences. A volcanic rock can be black.Logical formLearned from82 sentences. Slopes can be volcanic.Logical formLearned from82 sentences. A feature can be volcanic.Logical formLearned from80 sentences. A (mountain range) can be volcanic.Logical formLearned from78 sentences. Landforms can be volcanic.Logical formLearned from77 sentences. A center can be volcanic.Logical formLearned from74 sentences. A volcanic activity can be increased.Logical formLearned from72 sentences. A group can be volcanic.Logical formLearned from71 sentences. Ridges can be volcanic.Logical formLearned from70 sentences. A nature can be volcanic.Logical formLearned from70 sentences. Edifices can be volcanic.Logical formLearned from68 sentences. A range can be volcanic.Logical formLearned from67 sentences. A result can be constituted-of-or-filled-with volcanic activity.Logical formLearned from67 sentences.