?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#first> <_:72d42b8fb2f39369b0c2c8f7aeb711f2>
S · O 5ff2c943cfe185e41c50d6c1c8a5ca02
S · O rdf:first
S · O 72d42b8fb2f39369b0c2c8f7aeb711f2