With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Pat Riley is an executive for professional basketball.
text_B: Lee Si-a -LRB- born Lee Ji-a on July 10 , 1990 -RRB- is a South Korean actress and singer .. singer. singer. She made her entertainment debut in 2011 as a member of the K-pop girl group Chi Chi -LRB- which stands for `` Creative Electronic House Idols '' -RRB- .. K-pop. K-pop. girl group. girl group. Chi Chi. :ko :치치. When Chi Chi disbanded in 2013 , Lee turned to acting , and has appeared in television series such as Maids -LRB- 2015 -RRB- , Signal -LRB- 2016 -RRB- , and The Unusual Family -LRB- 2016 -RRB- .. Chi Chi. :ko :치치. television series. Korean drama. Maids. Maids ( 2015 TV series ). Signal. Signal ( TV series ). The Unusual Family. :ko :별난가족
not_related.