Featherweight
Featherweight is a weight class in the combat sports of boxing , kickboxing , mixed martial arts , and Greco-Roman wrestling . It is anybody from 57kg to 60kg . 
<triplet> Featherweight <subj> weight class <obj> instance of <subj> combat sport <obj> sport <triplet> boxing <subj> combat sport <obj> subclass of <triplet> kickboxing <subj> combat sport <obj> subclass of <triplet> mixed martial arts <subj> combat sport <obj> subclass of