Question: What Cantopop group is the lead actress in the movie Calling For Love in?

Context paragraphs:
Ho Hoo Tan: Ho Hoo Tan is an album by the Hong Kong Cantopop group Twins.  It was released in September 2006 by EEG.

Calling For Love: Calling For Love (Chinese: 呼叫大明星, pinyin: "Hūjiào Dà Míngxīng") is a 2010 Taiwanese drama starring Charlene Choi, Mike He, Chen Zhi Kai and Zhou Cai Shi.  It was produced by Comic Ritz International Production (可米瑞智國際藝能有限公司) with Chai Zhi Ping (柴智屏) as producer and directed by Lin He Long (林合隆).

Charlene Choi: Charlene Choi (born 22 November 1982) is a Canadian-Hong Kong actress and singer.  She is a member of Cantopop group Twins, along with Gillian Chung.

Twins' Love: Twins' Love is an EP by the Cantopop group Twins.  Since the first EP "Twins (AVEP)" was a great success, the Twins released this second CD just 3 months later, in November 2001.  It contained 8 songs and 1 music video, "Oi Ching Dong Yap Jun" (愛情當入樽).

Ab-normal Beauty: Ab-normal Beauty (死亡寫真) (also "Sei mong se jun") is a 2004 Hong Kong horror film directed and co-written by Oxide Pang.  It stars Race Wong and Rosanne Wong of the Cantopop group 2R.

The Twins Effect: The Twins Effect, also known as Vampire Effect in the United States, is a 2003 Hong Kong film directed by Dante Lam and Donnie Yen.  The film was derived from Cantopop group Twins, starring both members Charlene Choi and Gillian Chung in the leading roles.  Co-stars include Edison Chen and Ekin Cheng.  Jackie Chan makes a

William Chan: William Chan Wai-ting (born 21 November 1985) is a Hong Kong singer and actor.  In 2003, he participated in New Talent Singing Awards and won several awards.  He was then signed under Emperor Entertainment Group.  He began his singing career by joining Cantopop group Sun Boy'z in 2006 and left the group in 2008 to pursue a solo career, releasing his debut solo album in the same year.  Since then, he has released a total of 7 albums and 6 singles.

2R (group): 2R is a cantopop group in Hong Kong.  The group consists of Race Wong and Rosanne Wong, two sisters raised in Singapore.  Rosanne is the oldest sister.

Race Wong: Race Wong is an actress, singer and businesswoman.  Born in Malaysia, raised in Singapore, she pursued her career in the entertainment industry in Hong Kong with her sister Rosanne Wong which won her various awards for her singing career as the cantopop group 2R, including Most Promising Newcomer and Most Popular Group Award in the Annual Top 10 Song of the Year Awards (2003), Metro Broadcasting Music awards (2004), TVB Top 10 Songs of the Year (2004) and Hong Kong Commercial Radio Music Awards’ (2003).

Angela Au: Angela Au Man-sze (born 25 January 1983) is a Hong Kong singer and radio DJ/Web J.  A former a member of the cantopop group, "Cookies", she had previously been a student and part-time model.

Supporting paragraphs: Calling For Love Charlene Choi
Answer: Twins