21.   Ted Sandoval, a Filipino seismologist, said the temblor was one of the strongest ever to occur on the active Lubang fault.

22.   The islands are also crisscrossed by hundreds of active faults and volcanoes.

23.   There are hundreds of active faults and volcanoes on the islands.

24.   There are at least two active faults underneath the government-owned Rokkasho nuclear facilities.

25.   Turkey lies atop active fault lines and earthquakes are frequent.

26.   Turkey lies atop active fault lines.

27.   Four active fault lines beneath the sea and the earth are blamed for the seismic activity.