| http://www.w3.org/ns/prov#value | - The options, having ruled out GG, since one of the children is a boy, are BB or BG, not BB or BG or GB. ???GB??? is a false choice, it states a fact which is not in evidence, that Child One is a girl, G, when Child One has been previously identified as a boy, B. The only question remaining is the gender of Child Two, and the chances of B or G are equal, thus P(Child One|B)*P(Child Two|B) +
|
