Claim: A new scoring system was implemented during the Eurovision Song Contest 1975 (hosted by Karen Falck, a Swiss director, hostess, and television-producer), wherein each country would be represented by a jury of 10 members, at least half of whom had to be under the age of 26.
Evidence: Anna Karin Margareta Falck (née Edström, born 6 February 1932 in Säffle) is a Swedish director, hostess and television-producer. 
Anna Karin Margareta Falck
(1932-02-06) 6 February 1932 (age 88)
Säffle, Sweden 
Sweden