In case involving sexual acts performed by a care provider on a mentally retarded woman in a group home, conviction of unlawful sexual penetration, unlawful oral copulation, sexual battery with restraint, and a lewd and lascivious act by a caretaker on a dependent person, with 8-year sentence, is affirmed there was sufficient evidence that, at the time and under the circumstances, the woman's mental impairment, and particularly her impaired understanding of the sex acts involved, rendered her incapable of giving legal consent.