An eruption may be followed by tremors.Logical formLearned from4 sentences. A tremor can be at a (gold mine).Logical formLearned from4 sentences. Tremors can be aftershocks of a quake.Logical formLearned from4 sentences. A tremor may be felt across a country.Logical formLearned from4 sentences. Scientists may record some tremors.Logical formLearned from4 sentences. A move may send tremors.Logical formLearned from4 sentences. A tremor may be followed by magnitude.Logical formLearned from4 sentences. A wave may be caused by a tremor.Logical formLearned from4 sentences. An ocean may produce tremors.Logical formLearned from4 sentences. Radars may pick_up tremors.Logical formLearned from4 sentences. Some tremors can be in a northwest.Logical formLearned from4 sentences. Tremors may be centred on an area.Logical formLearned from4 sentences. Tremors may follow a series of quakes.Logical formLearned from4 sentences. A tremor may follow a series of quakes.Logical formLearned from4 sentences. Indonesian earthquakes may follow a tremor.Logical formLearned from4 sentences.