Dendropsophus sanborni
Its natural habitats are moist savanna , subtropical or tropical dry lowland grassland , subtropical or tropical seasonally wet or flooded lowland grassland , freshwater marshes , intermittent freshwater marshes , plantations , ponds , and canals and ditches . 
<triplet> savanna <subj> grassland <obj> subclass of <triplet> grassland <subj> habitat <obj> instance of