With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ricky Martin has performed in Mexico.
text_B: The Hillary Shield is contested between and at rugby union and the first match was played on 29 November 2008 at Twickenham Stadium , London .. Twickenham Stadium. Twickenham Stadium. London. London. The trophy is named in memory of the New Zealand mountaineer and explorer , Sir Edmund Hillary .. Sir Edmund Hillary. Edmund Hillary. The shield was announced on 23 October 2008 by Jock Hobbs , the Chairman of the New Zealand Rugby Union .. Jock Hobbs. Jock Hobbs. New Zealand Rugby Union. New Zealand Rugby Union. It was made by silversmiths Thomas Lyte .. Thomas Lyte. Thomas Lyte
not_related.