code: def _assemble_regulate_activity(stmt):
      
      subj_str = _assemble_agent_str(stmt.subj)
      obj_str = _assemble_agent_str(stmt.obj)
      if stmt.is_activation:
          rel_str = ' activates '
      else:
          rel_str = ' inhibits '
      stmt_str = subj_str + rel_str + obj_str
      return _make_sentence(stmt_str)
docs: Assemble RegulateActivity statements into text.