| http://www.w3.org/ns/prov#value | - We expressed the question in EL as follows: ( e0 [e0 at-about Now] ( y [[Epi2Me (have-as ((attr biological) father)) y] ** e0])) In this question, have-as is a subject adding operator that takes a n-ary predicate as argument and returns a n+1-ary predicate.
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