Question: Who was born first out of Charles Randolph Grean and Wilhelm Moritz Keferstein?
Sentence (from "Wilhelm Moritz Keferstein"): With Karl Wilhelm von Kupffer( 1829- 1902) he was co-author of a study on the electric organs of" Gymnotus" and" Mormyrus" that was published in Henle and Pfeufer's" Zeitschrift für rationelle Medicin"( Journal of rational medicine).
Relevant evidence: No