Task: Explanation
Input (English): In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, order, class, phylum, kingdom, domain, etc. Question: Alpheoidea is part of the relative level of a group of organisms that contains what families? Answer: families Alpheidae, Barbouriidae, Hippolytidae and Ogyrididae
Output (English): In biological classification, taxonomic rank is the relative level of a group of organisms a taxon in a taxonomic hierarchy.