Question: What sports governing role has been fulfilled by both Helmut Käser and Stanley Rous?
Sentence (from "Helmut Käser"): Käser served as general secretary under three presidents of FIFA, the Englishmen Arthur Drewry (1955–1961) and Stanley Rous (1961–1974) and from 1974 until 1980 under the Brazilian João Havelange.
Relevant evidence: No