Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Order | Couple | Karen | Nicky | Jason | Ruthie | Robin | Total | Skating song | Scoreboard | Public vote |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Roxanne & Daniel | 3.5 | 3.0 | 2.5 | 3.0 | 3.5 | 15.0 | " Take a Bow "— Rihanna | 4th | 13.563% |
| 2.0 | Melinda & Fred | 3.5 | 3.5 | 2.5 | 3.5 | 3.5 | 15.5 | " Love Song "— Sara Bareilles | 3rd | 2.922% |
| 3.0 | Coleen & Stuart | 2.5 | 2.5 | 2.0 | 2.5 | 3.0 | 12.5 | " Dream a Little Dream of Me "— Ella Fitzgerald | 6th | 61.801% |
| 4.0 | Zöe & Matt | 4.0 | 4.0 | 3.0 | 3.5 | 4.0 | 18.5 | " I Wanna Dance With Somebody "— Whitney Houston | 2nd | 7.593% |
| 5.0 | Gemma & Andrei | 2.5 | 3.0 | 2.0 | 2.5 | 3.0 | 13.5 | " The Power of Love "— Jennifer Rush | 5th | 3.901% |
Question:
Name the karen when nicky is 2.5
Answer:
2.5