| http://www.w3.org/ns/prov#value | - But when you do not know that you are making an assumption, you can not defend whether or not it is a reasonable one.In this case, the ambiguity is that we need to know why this person told you I have two children and that (at least) one of them is a boy (born on a Tuesday).Case 1: The person was required to tell you that fact, if it was true.
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