 Complete the following phrase:  Prior to the 2015 Contest, the Netherlands had participated in the Eurovision Song Contest fifty-five times since their debut as one of seven countries to take part in the inaugural contest in 1956. Since then, the country has won the contest four times: in 1957 with the song Net als toen performed by Corry Brokken; in 1959 with the song n Beetje performed by Teddy Scholten; in 1969 as one of four countries to tie for first place with De troubadour performed by Lenny Kuhr; and finally in 1975 with Ding-a-Dong performed by the group Teach-In. Following the introduction of semi-finals for the 