With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Cate Blanchett has performed on a London stage.
text_B: West End theatre is a common term for mainstream professional theatre staged in the large theatres of `` Theatreland '' in and near the West End of London .. theatre. theatre. West End of London. West End of London. Along with New York City 's Broadway theatre , West End theatre is usually considered to represent the highest level of commercial theatre in the English-speaking world .. theatre. theatre. Broadway theatre. Broadway theatre. English-speaking world. English-speaking world. Seeing a West End show is a common tourist activity in London .. In 2013 , ticket sales reached a record 14.4 million , making West End theatre the largest English-speaking audience in the world .. theatre. theatre. Famous screen actors , British and international alike , frequently appear on the London stage .
related.