Possible to use a rule as a fact in another rule?

We're working on better decomposing our facts and rules, and have found that (due to our data model hierarchy), we're having to re-stipulate the same facts in multiple rules. Is it possible to use a rule as a fact in another rule so we can avoid having to copy/paste fact statements into multiple rules which is tedious and error prone?

For example, if Rule 1 states that _FieldA must be true_, and Rule 2 states that _Field A must be true and Field B must be false_, is it possible to construct Rule 2 such that _Rule 1 must be true and Field B must be false_?

该 issue 没有指定文件、测试或入口点。首先定位规则和事实的评估路径，然后明确应如何评估作为事实引用的规则；完成的标准是 Rule 2 可以复用 Rule 1 而无需重复 Field A，并且现有行为仍受到覆盖。

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