3 mishnayot! On the details of the process of the executions: burning, stoning, strangulation, respectively. Along with several rabbinic disputes along the way. Note especially that "burning" isn't a matter of flames, as one might have thought, and the body is not desecrated. The one example provided is the daughter of the kohen, but the Gemara concludes that she is not a useful example because her case is too individual. Also, the biblical Nadav and Avihu, the sons of Aharon who were killed with fire by God on the altar, are introduced as an example. "Stoning" is determined to be decapitation, with concern that the execution still be respectful of the person being killed.