What is the yield, neutrons per fission of the group with decay constants less than 0.301, a half-life of 22.72, and a group number larger than 2?
CREATE TABLE "principle" (
  "group" real,
  "half_life_s" real,
  "decay_constant_s_1" real,
  "yield_neutrons_per_fission" real,
  "fraction" real
);
SELECT SUM("yield_neutrons_per_fission") FROM "principle" WHERE "decay_constant_s_1"<0.301 AND "half_life_s"=22.72 AND "group">2;