<prompt> Translate the following text to EnglishKitabu hicho cha wasifu kinamfunua mwanasayansi huyo wa ngono kuwa mshoga mwenye kujihusisha na ngono ya jinsia moja ambaye alipanga na kupiga filamu karamu za ngono.  <response>: The biography exposes the pioneer sexologist as a gay masochist who organized and filmed orgies. 