 Complete the following phrase:  In 1941, Ocak began to take part in political activities in Gaziantep. In 1946 elections, he was an MP candidate from Democrat Party DP. In 1950, he was elected as DPs local district chair and in 1951, as DPs province chair which lasted until 1957. From 17 November 1955 to 16 November 1956 he served as the mayor of Gaziantep. In 1961 elections after the 