CREATE TABLE "iupap_s_uno_proposal" (
  "coefficient" text,
  "parts_per_example" text,
  "uno_equiv" text,
  "symbol_form" text,
  "value_of_quantity" text
);

Question: What is the Parts-per example of 2×10 −6?
SQL: SELECT "parts_per_example" FROM "iupap_s_uno_proposal" WHERE "value_of_quantity"='2×10 −6';

Question: What is the Coefficient of 2 ppt?
SQL: SELECT "coefficient" FROM "iupap_s_uno_proposal" WHERE "parts_per_example"='2 ppt';