Read this: In Kazakhstan on June 19, 1989, young men carrying guns, firebombs, iron bars and stones rioted in Zhanaozen, causing a number of deaths. The youths tried to seize a police station and a water-supply station. They brought public transportation to a halt and shut down various shops and industries. By June 25, the rioting had spread to five other towns near the Caspian Sea. A mob of about 150 people armed with sticks, stones and metal rods attacked the police station in Mangishlak, about 90 miles from Zhanaozen, before they were dispersed by government troops flown in by helicopters. Mobs of young people also rampaged through Yeraliev, Shepke, Fort-Shevchenko and Kulsary, where they poured flammable liquid on trains housing temporary workers and set them on fire.

How many towns had riots of their own following the initial riots?
What is the answer? (If it cannot be answered, return "unanswerable")
five