<a
            href="./merged-ontology-vocab.html#differentInAttribute">(#$differentInAttribute</a>
            THING1 THING2 ATTRIBUTE) means that the two things THING1
            and THING2 do not have the same values of the <a
            href="./fundamental-vocab.html#AttributeType">#$AttributeType</a>
            ATTRIBUTE. Here 'the same' could mean complete identity or
            close resemblance -- what this 'different' means, and what
            the standard of closeness or identity is, depends