With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Gerard Butler is a father.
text_B: The Open 13 is an annual men 's tennis tournament played in Marseille , France .. Marseille. Marseille. tennis. tennis. The tournament is an ATP World Tour 250 series event on the Association of Tennis Professionals tour .. ATP World Tour 250 series. ATP World Tour 250 series. Association of Tennis Professionals. Association of Tennis Professionals. It is held for one week in February .. The number 13 is the INSEE code of the Bouches-du-Rhone departement of which Marseille is the capital .. Marseille. Marseille. INSEE code. INSEE code. Bouches-du-Rhone. Bouches-du-Rhone. departement. departement in France. The tournament is played on indoor hard courts at the Palais des sports de Marseille .. Marseille. Marseille. Palais des sports de Marseille. Palais des sports de Marseille. The Centre Court has a capacity of 5,800 seats .
not_related.