Question: How many 13mm cartridge anti-tank rifles were produced for World War I?
Sentence (from "Mauser 1918 T-Gewehr"): The Mauser 13 mm anti-tank rifle (, usually abbreviated T-Gewehr) was the world's first anti-tank rifle—the first rifle designed for the sole purpose of destroying armored targets—and the only anti-tank rifle to see service in World War I.
Relevant evidence: No