Assertion: volcano's activity | /r/CapableOf | increase in june
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Source sentences:
text: Seismic activity and rockfalls from the lava dome at the summit increased again in June 1998 and peaked between 11-19 July when 128 rock avalanches and pyroclastic flows were recorded descending the Lamat, Krasak/Bebeng and Boyong rivers on the SW and SSW flanks of the volcano.