If the calculated activity (CI) is  4.96×10 −11, what is the specimen weight/size?
CREATE TABLE "notes" (
  "specimen_weight_size" text,
  "calculated_activity_bq" real,
  "calculated_activity_ci" text,
  "estimated_activity_gr_api" text,
  "estimated_exposure_m_rem_hr" text
);
SELECT "specimen_weight_size" FROM "notes" WHERE "calculated_activity_ci"='4.96×10 −11';