Question: Who was the most powerful witch in charmed?

Disambiguated questions and answers:
context: Former "Beverly Hills, 90210" actress Shannen Doherty was cast as the eldest sister Prue Halliwell, while her best friend at the time and former "Picket Fences" actress Holly Marie Combs played the role of the middle sister Piper Halliwell. Lori Rom was originally cast as the youngest sister Phoebe Halliwell in the 28-minute unaired pilot episode. However, Rom quit the series, and a new pilot was filmed with former "Who's the Boss?" actress Alyssa Milano in the role of Phoebe. Doherty departed "Charmed" at the end of the third season and was replaced in the fourth season by film actress Rose McGowan, who played the long-lost younger half-sister Paige Matthews.
question: Who was the most powerful witch in charmed as youngest sister?
short_answers: Phoebe Halliwell
wikipage: Charmed
context: Former "Beverly Hills, 90210" actress Shannen Doherty was cast as the eldest sister Prue Halliwell, while her best friend at the time and former "Picket Fences" actress Holly Marie Combs played the role of the middle sister Piper Halliwell. Lori Rom was originally cast as the youngest sister Phoebe Halliwell in the 28-minute unaired pilot episode. However, Rom quit the series, and a new pilot was filmed with former "Who's the Boss?" actress Alyssa Milano in the role of Phoebe. Doherty departed "Charmed" at the end of the third season and was replaced in the fourth season by film actress Rose McGowan, who played the long-lost younger half-sister Paige Matthews.
question: Who was the most powerful witch in charmed as middle sister?
short_answers: Piper Halliwell
wikipage: Charmed
context: Prudence "Prue" Halliwell is a fictional character from the American television series "Charmed", played by Shannen Doherty from October 7, 1998 until May 17, 2001. The character was created by Constance M. Burge, who based Prue on her older sister. Prue is introduced into the series as the eldest sister to Piper (Holly Marie Combs) and Phoebe Halliwell (Alyssa Milano). She is one of the first original featured leads and, more specifically, a Charmed Oneone of the most powerful witches of all time. Prue initially possesses the power to move objects with her mind by chanelling telekinesis through her eyes. As the series progresses, she learns how to channel her telekinesis through her hands and gains the power of astral projection, the ability to be in two places at once. Prue also develops martial arts skills and becomes an effective hand-to-hand fighter like Phoebe.
question: Who was the most powerful witch in charmed as eldest sister?
short_answers: Prudence "Prue" Halliwell
Prue Halliwell
wikipage: Prue Halliwell

Long-form answers:
knowledge: content: Charmed is an American supernatural fantasy drama television series created by Constance M. Burge and produced by Aaron Spelling and his production company Spelling Television, with Brad Kern serving as showrunner. The series was originally broadcast by The WB for eight seasons from October 7, 1998, until May 21, 2006. The series narrative follows a trio of sisters, known as The Charmed Ones, the most powerful good witches of all time, who use their combined "Power of Three" to protect innocent lives from evil beings such as demons and warlocks. Each sister possesses unique magical powers that grow and evolve, while they attempt to maintain normal lives in modern-day San Francisco.
wikipage: Charmed
content: The series initially focuses on the three Halliwell sisters, Prue (Shannen Doherty), Piper (Holly Marie Combs), and Phoebe (Alyssa Milano). Following Prue's death in the third-season finale, their long-lost half sister Paige Matthews (Rose McGowan) assumes her place within the "Power of Three" from season four onwards.
wikipage: Charmed
long_answer: Charmed is an American supernatural fantasy drama television series with a narrative following a trio of sisters, known as The Charmed Ones, the most powerful good witches of all time, who use their combined "Power of Three" to protect innocent lives from evil beings such as demons and warlocks. Each sister possesses unique magical powers that grow and evolve, while they attempt to maintain normal lives in modern-day San Francisco. The series initially focuses on the three Halliwell sisters, the eldest, Prue Halliwell, middle sister, Piper Halliwell, and youngest sister, Phoebe Halliwell. Following Prue's death in the third-season finale, their long-lost half sister Paige Matthews assumes her place within the "Power of Three" from season four onwards.