You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.
Q: The answer is 9 stones (or maybe more). \n\nAfter adding a look-alike to 9 stones, there will be 10. Name them ABCDEFGHIJ.\n\n"ABC<DEF" means "the stones ABC as a group weigh less than the stones DEF."\n\nWeighing 1. Weigh ABC vs. DEF.\n\nIf ABC<DEF:\n--Weighing 2. Weigh ABC vs. GHI.\n----If ABC<GHI, the look-alike must be light and among ABC.\n----Weighing 3. Weigh A vs. B.\n------If A<B, the look-alike is A.\n------If A=B, the look-alike is C.\n------If A>B, the look-alike is B.\n----If ABC=GHI, the look-alike must be heavy and among DEF.\n----Weighing 3. Weigh D vs. E.\n------If D<E, the look-alike is E.\n------If D=E, the look-alike is F.\n------If D>E, the look-alike is D.\n\nIf ABC=DEF, the look-alike must be among GHIJ.\n--Weighing 2. Weigh G vs. H.\n----If G=H, the look-alike candidates are I and J.\n----Otherwise, the look-alike candidates are G and H.\n----Weighing 3. Weigh one of the two candidates against A.\n------If they differ in weight, the look-alike is that candidate, otherwise it is the other candidate.\n\nIf ABC>DEF:\n--Weighing 2. Weigh ABC vs. GHI.\n----If ABC>GHI, the look-alike must be heavy and among ABC.\n----Weighing 3. Weigh A vs. B.\n------If A<B, the look-alike is B.\n------If A=B, the look-alike is C.\n------If A>B, the look-alike is A.\n----If ABC=GHI, the look-alike must be light and among DEF.\n----Weighing 3. Weigh D vs. E.\n------If D<E, the look-alike is D.\n------If D=E, the look-alike is F.\n------If D>E, the look-alike is E.
A: 
What is the maximum number of identical stones so that after a look-alike is added...?