"fn15schema: control the functioning of (a device, system, or institution)"^^ . "operate.v" . "operate.v"^^ . "fn15schema: (of an artifact or machine) be active."^^ . . "T"^^ . . . "operate" . . "v" . . . "fn15schema: control a device (in order to acheive the prototypical function of the device)."^^ .