UK national selection for the Eurovision Song Contest

Columns: Year | Artist | Song | UK Chart | At Eurovision
1968 | Cliff Richard | Congratulations | 1 | 2nd | 1969 | Lulu | Boom Bang-a-Bang | 2 | 1st | 1970 | Mary Hopkin | Knock Knock , Who 's There ? | 2 | 2nd | 1971 | Clodagh Rodgers | Jack in the Box | 4 | 4th | 1972 | The New Seekers | Beg , Steal or Borrow | 2 | 2nd | 1973 | Cliff Richard | Power to All Our Friends | 4 | 3rd | 1974 | Olivia Newton-John | Long Live Love | 11 | 4th

Example questions:
Which decade did the musicians with the UK Eurovision song Beg , Steal or Borrow become internationally successful ? | Which band was covered by the musician with the UK Eurovision song Puppet on a String when she sang Hand in Glove ? | How many copies of albums by the musician with the UK Eurovision song Congratulations were purchased ? | Which song sung by the musician with the UK Eurovision song Boom Bang-a-Bang shared a title with a movie ? | Which year was the musician with the UK Eurovision song I Belong runner-up at Eurovision ?

Answers:
1970s | the Smiths | more than 250 million | To Sir with Love | 1965