The race was umpired by Guy Oliver Nickalls who had rowed for Oxford in the 1921 , 1922 and 1923 races . Burnell , p. 49 .
Head entity: 1923 races Q18587763 19 20
Tail entity: 1922 Q18587761 17
Relation (head \u2192 tail): P155
Inverse relation (tail \u2192 head): P156