question: What was the first consideration for the OKL to support Directive 23 ?
answer: difficulty in estimating the impact of bombing upon war production
turker_answer: The first consideration for the OKL to support Directive 23 was the difficulty in estimating the impact of bombing upon war production .
rule-based: The first consideration for the OKL to support Directive 23 was difficulty in estimating the impact of bombing upon war production .