?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#first> <_:c515ab111715feea56b5a519a8a700ea>
S · O de7bf798bc21d67e2e2a6401978651b1
S · O rdf:first
S · O c515ab111715feea56b5a519a8a700ea