Question: Who owns the clift hotel in san francisco?

Disambiguated questions and answers:
context: No context provided
question: Who first owned the Clift Royal Sonesta Hotel?
short_answers: Frederick C. Clift
context: Canadian Four Seasons Hotels acquired an interest in the hotel in 1976, and began managing it as their first US property. Two years later, in 1978, they renamed it the Four Seasons Clift Hotel. On February 21, 1995, Four Seasons sold their interest in the property and it became The Clift, a Grand Heritage Hotel. Ian Schrager Hotels took over management in 1997, and the hotel became simply Clift. Schrager bought the hotel outright in 1999, for $80 million. Soon after, he oversaw a $50 million complete renovation, which involved the restoration of the Redwood Room, and the gutting and redesign of much of the rest of the hotel, by designer Philippe Starck. The hotel reopened on August 3, 2001. Starck's lobby featured his furniture collection, including chairs from Ray and Charles Eames, furniture by Salvador Dali, and a stool by Roberto Matta (inspired by René Margritte). Sonesta Hotels assumed management of the hotel in May 2018 and it was renamed The Clift Royal Sonesta Hotel.
question: Who aquired an interest in the Clift Royal Sonesta Hotel in 1976?
short_answers: Four Seasons Hotels
wikipage: The Clift Royal Sonesta Hotel
context: Canadian Four Seasons Hotels acquired an interest in the hotel in 1976, and began managing it as their first US property. Two years later, in 1978, they renamed it the Four Seasons Clift Hotel. On February 21, 1995, Four Seasons sold their interest in the property and it became The Clift, a Grand Heritage Hotel. Ian Schrager Hotels took over management in 1997, and the hotel became simply Clift. Schrager bought the hotel outright in 1999, for $80 million. Soon after, he oversaw a $50 million complete renovation, which involved the restoration of the Redwood Room, and the gutting and redesign of much of the rest of the hotel, by designer Philippe Starck. The hotel reopened on August 3, 2001. Starck's lobby featured his furniture collection, including chairs from Ray and Charles Eames, furniture by Salvador Dali, and a stool by Roberto Matta (inspired by René Margritte). Sonesta Hotels assumed management of the hotel in May 2018 and it was renamed The Clift Royal Sonesta Hotel.
question: Who bought the Clift Royal Sonesta Hotel in 1999?
short_answers: Ian Schrager
wikipage: The Clift Royal Sonesta Hotel
context: Canadian Four Seasons Hotels acquired an interest in the hotel in 1976, and began managing it as their first US property. Two years later, in 1978, they renamed it the Four Seasons Clift Hotel. On February 21, 1995, Four Seasons sold their interest in the property and it became The Clift, a Grand Heritage Hotel. Ian Schrager Hotels took over management in 1997, and the hotel became simply Clift. Schrager bought the hotel outright in 1999, for $80 million. Soon after, he oversaw a $50 million complete renovation, which involved the restoration of the Redwood Room, and the gutting and redesign of much of the rest of the hotel, by designer Philippe Starck. The hotel reopened on August 3, 2001. Starck's lobby featured his furniture collection, including chairs from Ray and Charles Eames, furniture by Salvador Dali, and a stool by Roberto Matta (inspired by René Margritte). Sonesta Hotels assumed management of the hotel in May 2018 and it was renamed The Clift Royal Sonesta Hotel.
question: Who manages the Clift Royal Sonesta Hotel since May 2018?
short_answers: Sonesta Hotels
wikipage: The Clift Royal Sonesta Hotel

Long-form answers:
knowledge: content: The Clift Royal Sonesta Hotel is a historic hotel located two blocks from Union Square at the intersection of Geary Street and Taylor Street, San Francisco, California.
wikipage: The Clift Royal Sonesta Hotel
content: In 1913, Frederick C. Clift, an attorney from a large family in the Sierra foothills, commissioned a 300-room hotel on a lot the family had inherited.
wikipage: The Clift Royal Sonesta Hotel
long_answer: The Clift Royal Sonesta Hotel is a historic hotel located two blocks from Union Square at the intersection of Geary Street and Taylor Street, San Francisco, California. In 1913, Frederick C. Clift, an attorney from a large family in the Sierra foothills, commissioned a 300-room hotel on a lot the family had inherited. In 1976, Four Seasons Hotels acquired an interest in the hotel and began managing it as their first US property. Ian Schrager Hotels took over management in 1997, and it became simply Clift. In 1999 they bought the hotel outright for $80 million. Sonesta Hotels assumed management in May 2018 and it was renamed The Clift Royal Sonesta Hotel.