What is the highest Amerindian (Hispanic/Non-Hispanic) value having a Black (Hispanic/Non-Hispanic) of 15.7 and White (Hispanic/Non-Hispanic) over 69.5?
CREATE TABLE "racial_composition" (
  "municipality_2010" text,
  "white_both_hispanic_and_non_hispanic" real,
  "black_both_hispanic_and_non_hispanic" real,
  "amerindian_both_hispanic_and_non_hispanic" real,
  "n_asia_both_hispanic_and_non_hispanic" real,
  "multiracial_both_hispanic_and_non_hispanic" real,
  "hispanic_of_any_race" real
);
SELECT MAX("amerindian_both_hispanic_and_non_hispanic") FROM "racial_composition" WHERE "black_both_hispanic_and_non_hispanic"=15.7 AND "white_both_hispanic_and_non_hispanic">69.5;