They now have instruments to detect the small swellings of a volcano that indicate molten rock (magma) is rising into the edifice of the volcano.
(They; have; instruments to detect the small swellings of a volcano; T:now) Context(They have,List([0, 13))):(They; have to detect; the small swellings of a volcano) (a volcano; indicate; molten rock (magma) is rising into the edifice of the volcano) Context(a volcano indicate,List([59, 82))):(molten rock; is rising; into the edifice of the volcano)
They have,List([0, 13)) a volcano indicate,List([59, 82))
They They a volcano molten rock
have have to detect indicate is rising
instruments to detect the small swellings of a volcano T:now
the small swellings of a volcano
molten rock (magma) is rising into the edifice of the volcano
into the edifice of the volcano