Table:
text: List of Irish International champions in badminton
Winners
Winners
Year_ Men_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1936 Ralph Nichols Ian Maconachie James Rankin Marian Horsley Betty Uber Donald Hume Betty Uber
1937 James Rankin Ian Maconachie James Rankin Mavis Macnaughton N. Stoker James Rankin O. Wilson
1938 Thomas Boyle Kenneth Wilson A. Titherley Daphne Young N. Stoker Thomas Boyle O. Wilson
1939 A. S. Samuel Thomas Boyle James Rankin Mavis Macnaughton Olive Wilson Thomas Boyle O. Wilson
1940 1946 no competition no competition no competition no competition
1947 N. B. Radford Thomas Boyle James Rankin Q. M. Allen Betty Uber Ralph Nichols J. B. Shearlaw
1948 N. B. Radford Noel Radford Frank Peard Nora Conway B. Good H. J. Wingfield V. E. Duringer

Question: What was the name of the mixed doubles of the year in which Ralph Nichols played among the badminton champions on the Irish International List in men's singles?