In what circumstances will a jury acquit a defendant in a sexual assault case where the evidence relied mainly on circumstantial evidence?

same in cases in which the People rely mainly on circumstantial evidence. [Citation.] "Although it is the duty of the jury to acquit a defendant if it finds that circumstantial evidence is susceptible of two interpretations, one of which suggests guilt and the other innocence [citations], it is the jury, not the appellate court which must be convinced of the defendant's guilt beyond a reasonable doubt. '"If the circumstances reasonably justify the trier of fact's findings, the opinion of the reviewing court that the circumstances might also reasonably be reconciled with a contrary finding does not warrant a reversal of the judgment."' [Citations.]" [Citations.]' [Citations.] The conviction shall stand 'unless it appears "that upon no hypothesis whatever is there sufficient substantial evidence to support [the conviction]."' [Citation.]" (People v. Cravens (2012) 53 Cal.4th 500, 507-508.)