question: Only a few of the 105 mm static mounting AA guns were produced because work had started on which other gun ?
answer: 90 mm AA gun
turker_answer: Only a few of the 105 mm static mounting AA guns were produced because work had started on the 90 mm AA gun gun .
rule-based: Only a few of the 105 mm static mounting AA guns were produced because work had started on 90 mm AA gun other gun .