Question: Who died in the plane crash grey's anatomy?

Disambiguated questions and answers:
context: After their plane crashes in the woods, Dr. Meredith Grey (Ellen Pompeo), Dr. Lexie Grey (Chyler Leigh), Dr. Cristina Yang (Sandra Oh), Dr. Arizona Robbins (Jessica Capshaw), Dr. Derek Shepherd (Patrick Dempsey), and Dr. Mark Sloan (Eric Dane) desperately fight to stay alive. Meredith is relatively unscathed, while the rest have serious injuries: the pilot, Jerry (James LeGros), has a major spine injury, and Yang dislocates her arm. Robbins' femur is broken and sticking through the skin, Sloan has serious internal injuries; though initially adrenaline keeps him on his feet. Shepherd is sucked out the side of the plane and awakens alone in the wood; his mangled hand having been pushed through the door of the plane. However, none are in as bad shape as Lexie, who is crushed under a piece of the plane. While Meredith searches for Shepherd, Yang and Sloan try to move the debris off Lexie. Eventually, the two realize that they cannot save her, so Sloan holds her hand while she dies, telling her that he loves her. As Sloan tells her of the life the two were meant to have together, Lexie dies with a smile on her face just as Meredith and Yang are approaching. 
question: Which character died in the plane crash grey's anatomy?
short_answers: Alexandra Caroline Grey
Dr. Lexie Grey
wikipage: Flight (Grey's Anatomy)
context: No context provided
question: Which actor died in the plane crash grey's anatomy?
short_answers: Chyler Leigh
Chyler Leigh West

Long-form answers:
knowledge: content: While flying to their destination, the doctors' plane crashes in the wilderness and Lexie is crushed under debris from the aircraft but manages to alert Mark and Cristina to help her. The pair try in vain to free Lexie, who realizes that she is suffering from a hemothorax and is unlikely to survive. While Cristina tries to find an oxygen tank and water to save Lexie, Mark holds Lexie's hand and professes his love for her, telling her that they will get married, have kids, and live the best life together as they are "meant to be". While fantasizing about the future that she and Mark could have had together, Lexie succumbs to her injuries and dies moments before Meredith arrives. The remaining doctors are left stranded in the woods waiting for rescue, with a devastated Meredith crying profusely and Mark refusing to let go of Lexie's hand.
wikipage: Lexie Grey
content: Lexie is named as part of a team of surgeons that will be sent to Boise to separate conjoined twins, along with Mark, Meredith, Derek, Cristina and Arizona Robbins 
wikipage: Lexie Grey
long_answer: Dr. Lexie Grey, who is played by the actress Chyler Leigh, died in the plane crash on Grey's Anatomy. Lexie is named as part of a team of surgeons that will be sent to Boise to separate conjoined twins, along with Mark, Meredith, Derek, Cristina and Arizona Robbins. While flying to their destination, the doctors' plane crashes in the wilderness, and Lexie is crushed under debris from the aircraft. However, she manages to alert Mark and Cristina to help her. The pair try in vain to free Lexie, who realizes that she is suffering from a hemothorax and is unlikely to survive. While Cristina tries to find an oxygen tank and water to save Lexie, Mark holds Lexie's hand and professes his love for her. He tells her that they will get married, have kids and live the best life together. While fantasizing about the future that she and Mark could have had together, Lexie succumbs to her injuries and dies moments before Meredith arrives. The remaining doctors are left stranded in the woods waiting for rescue, with a devastated Meredith crying profusely and Mark refusing to let go of Lexie's hand.