p[0.9,0.9] PEOPLE are LOWPOLLUTION; p[0.3,0.3] PEOPLE are SMOKERS; p[0.27,0.27] PEOPLE are (LOWPOLLUTION and SMOKERS); p[0.05,0.05] (PEOPLE and (not LOWPOLLUTION) and SMOKERS) are CANCER; p[0.02,0.02] (PEOPLE and (not LOWPOLLUTION) and (not SMOKERS)) are CANCER; p[0.03,0.03] (PEOPLE and LOWPOLLUTION and SMOKERS) are CANCER; p[0.001,0.001] (PEOPLE and LOWPOLLUTION and (not SMOKERS)) are CANCER; ?: p[] PEOPLE are CANCER;