code: func MakeQuad(q quad.Quad) *Quad {
  	return &Quad{
  		SubjectValue:   MakeValue(q.Subject),
  		PredicateValue: MakeValue(q.Predicate),
  		ObjectValue:    MakeValue(q.Object),
  		LabelValue:     MakeValue(q.Label),
  	}
  }
docs: // MakeQuad converts quad.Quad to its protobuf representation.