Name the yarn type for standard yarn weight system for 3 or light
CREATE TABLE "table1_20297668_1" (
  "standard_yarn_weight_system" text,
  "yarn_type_us" text,
  "ply_uk_nz_au" text,
  "m_100g" text,
  "wraps_per_inch_wpi" text
);
SELECT "yarn_type_us" FROM "table1_20297668_1" WHERE "standard_yarn_weight_system"='3 or Light';