[Wikipedia] Al-Mayassa bint Hamad bin Khalifa Al Thani is the sister of Qatar's ruling Emir Tamim bin Hamad Al Thani, and daughter of the country's former Emir Hamad bin Khalifa Al Thani and his second wife Sheikha Moza bint Nasser al-Misnad. Al-Mayassa was listed as the most influential person in art on Art+Au
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