<prompt> Translate the following text to EnglishVipande vya chuma vilivyotengenezwa kwa marumaru vilitumiwa kuwakaza wagonjwa wa akili ambao walipelekwa hapa kwa matumaini ya kupona.  <response>: The iron rings in the marble floor of the chapel were used to restrain the mentally ill, who were once brought here hoping to be cured by the waters. 