Table:
text: Athletics at the 2008 Summer Olympics – Women's 400 metres hurdles
Semifinals
Semifinals
Rank_ Heat Name_ Nationality Result_
1 1 Sheena Tosta United States 54.07
2 2 Melaine Walker Jamaica 54.20
3 1 Tasha Danvers Great Britain 54.31
4 1 Anna Jesień Poland 54.36
5 1 Ekaterina Bikert Russia 54.38
6 2 Anastasiya Rabchenyuk Ukraine 54.60
7 1 Nickiesha Wilson Jamaica 54.67
8 1 Anastasiya Ott Russia 54.74
9 2 Tiffany Ross-Williams United States 54.99
10 2 Zuzana Hejnová Czech Republic 55.17
11 2 Aïssata Soulama Burkina Faso 55.69
12 2 Irina Obedina Russia 55.69
13 2 Queen Harrison United States 55.88
14 2 Tsvetelina Kirilova Bulgaria 55.97
15 1 Satomi Kubokura Japan 56.69
16 1 Angela Morosanu Romania 57.67

Question: What has a score of 54.67 for Athletics at the 2008 Summer Olympics - Women's 400m Hurdles Semifinals?

Question: Which nationality has a heat less than 2 and a rank of 15 for Athletics at the 2008 Summer Olympics - Women's 400m hurdles semifinals?

Question: What rank has the name tsvetelina kirilova and a result less than 55.97 in Athletics at the 2008 Summer Olympics - Women's 400m hurdles semifinals?

Question: For Athletics at the 2008 Summer Olympics - Women's 400m hurdles semifinals, which heat has Bulgarian nationality and a score greater than 55.97?