class RDF::N3::Algebra::List::First

Iff the subject is a list and the object is the first thing that list, then this is true. The object can be calculated as a function of the list.

@example

{ ( 1 2 3 4 5 6 ) list:first 1 } => { :test1 a :SUCCESS }.

The object can be calculated as a function of the list.