Question: who is the athlete when react is 0.164?
SQL: SELECT "Athlete" FROM "2-18569011-8" WHERE "React" = 0.164;

Question: what is the lowest lane when react is more than 0.164 and the nationality is Guinea?
SQL: SELECT MIN("Lane") FROM "2-18569011-8" WHERE "React" > 0.164 AND "Nationality" = 'Guinea';