code: function() {
          var e, spo;
  
          if(this.falseFact) {
              spo = 'FALSE';
          } else {
              spo = '(' + Utils.removeBeforeSharp(this.subject) + ', ' + Utils.removeBeforeSharp(this.predicate) + ', ' + Utils.removeBeforeSharp(this.object) + ')'
          }
  
          this.explicit ? e = 'E' : e = 'I';
          return e + spo;
      }
docs: Convenient method to stringify a fact.
  @returns {string}