Simplify the following text for a Grade 7 native English-speaking person.
Original: He was hanged , drawn and quartered â '' strangled by hanging but released while he was still alive , eviscerated and his bowels burnt before him , beheaded , castrated , then cut into four parts .
Simplified: He was hanged , drawn and quartered -- the most terrible execution in English law . It meant he was strangled by hanging but released while he was still alive , his body cut open , and his bowels burnt before him .