What is the US Krag-Jørgensen M1892 when the Norwegian Krag-Jørgensen M1894 is 126.8cm?
CREATE TABLE "comparison_with_contemporary_rifles" (
  "rifle" text,
  "danish_krag_j_rgensen_1889" text,
  "us_krag_j_rgensen_m1892" text,
  "norwegian_krag_j_rgensen_m1894" text,
  "japanese_type_38_rifle" text,
  "german_gewehr_98" text,
  "british_lee_enfield_data_for_late_model" text
);
SELECT "us_krag_j_rgensen_m1892" FROM "comparison_with_contemporary_rifles" WHERE "norwegian_krag_j_rgensen_m1894"='126.8cm';