Question: The Sagittarius Dwarf Spheroidal Galaxy, a loop-shaped galaxy of the Milky Way, is which type of the three main classes of galaxy originally described by Edwin Hubble in "The Realm of the Nebulae?"
Sentence (from "Sagittarius Dwarf Spheroidal Galaxy"): It consists of four globular clusters, the main cluster having been discovered in 1994.
Relevant evidence: No