Text: The history of the myriad painful fads women have subjected themselves to over the years--iron maidens, rubber girdles, breast binding--may help remind viewers what all that '60s bra-burning was about.
Entailment: You should see the trends women have been made to follow over to years to help you understand the bra-burning of the 60's.
Contradiction: You will never understand the bra-burning that happened in the 60's.