Ptychadena porosissima
Its natural habitats are temperate forest , subtropical or tropical moist montane forest , moist savanna , subtropical or tropical moist shrubland , temperate grassland , subtropical or tropical seasonally wet or flooded lowland grassland , subtropical or tropical high-altitude grassland , swamps , intermittent freshwater marshes , pastureland , rural gardens , and heavily degraded former forest . 
<triplet> savanna <subj> grassland <obj> subclass of <triplet> grassland <subj> habitat <obj> instance of