original: it was discovered in 1949 by walter baade .
simplifications: walter baade found it in 1949 . it was discovered in 1949 by walter baade . it was found in 1949 by walter baade walter baade discovered it in 1949 . walter baade discovered it in 1949 . it was discovered in 1949 by walter baade . it was discovered by walter baade in 1949 . it was discovered in 1949 by walter baade .