Table: krag_jorgensen_rifles
Columns: nation
model
length
barrel_length
weight

Question: What is Nation, when Model is M1895 & M1897 Carbine?
SQL: SELECT "nation" FROM krag_jorgensen_rifles WHERE "model" = 'm1895 & m1897 carbine'

Question: What is Weight, when Length is 1168mm / 46 in?
SQL: SELECT "weight" FROM krag_jorgensen_rifles WHERE "length" = '1168mm / 46 in'

Question: What is Length, when Barrel Length is 750mm / 29.5 in?
SQL: SELECT "length" FROM krag_jorgensen_rifles WHERE "barrel_length" = '750mm / 29.5 in'