Given the question: What key details about trần liễu  can be extracted from the following bio?  Bio: prince yên sinh trần liễu -lrb- 1211 -- 1251 -rrb- was the elder brother of the trần thái tông , the first emperor of trần dynasty . initially , trần liễu was honoured by his younger brother with the title king hiển -lrb- vietnamese : hiển hoàng -rrb- but he was downgraded to prince yên sinh after the short-lived revolt in fury of losing his pregnant wife , princess thuận thiên , to the emperor under the pressure of imperial regent trần thủ Độ . besides this event , trần liễu was well known in the history of vietnam for being father of trần hưng Đạo , commander-in-chief of the Đại việt army during the second and third war of resistance against the mongol invasion .
The answer is:
- issue is trần Đạo trần quốc tuấn empress trần thị thiều tung prince vũ thành trần doãn prince hưng- death place is yên sinh , Đại việt- title is prince yên sinh- succession is prince sinh phụng càn king hiển prince hoài prince yên- reign is under 1236 & ndash ; 1237 1237 & ndash ; 1251 lý huệ tông 1234 & ndash ; 1236- spouse is thuận thiên lady thiện Đạo- death date is 1251- house is trần dynasty- father is trần thừa- birth date is 1211- name is trần liễu 陳柳- birth place is Đại việt