Question: Who ran the company that produced the largest pieces of artillery used during World War I by barrel length?
Sentence (from "5&quot;/25 caliber gun"): The 5"/25 caliber gun (spoken "five-inch-twenty-five-caliber") entered service as the standard heavy anti-aircraft (AA) gun for United States Washington Naval Treaty cruisers commissioned in the 1920s and 1930s.
Relevant evidence: No