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:
| Stage | Winner | General classification | Points Classification | Mountains Classification | Sprints Classification | Team Classification |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Alejandro Valverde Óscar Freire | Alejandro Valverde Óscar Freire | Alejandro Valverde Óscar Freire | Gonzalo Rabuñal | Christian Meier | Team RadioShack |
| 2.0 | Alejandro Valverde Óscar Freire | Alejandro Valverde Óscar Freire | Alejandro Valverde Óscar Freire | Gonzalo Rabuñal | Christian Meier | Team RadioShack |
| 3.0 | Francesco Gavazzi | Óscar Freire | Óscar Freire | Gonzalo Rabuñal | Christian Meier | Team RadioShack |
| 4.0 | Samuel Sánchez | Alejandro Valverde Chris Horner | Alejandro Valverde Samuel Sánchez | Amets Txurruka | Christian Meier | Team RadioShack |
| 5.0 | Joaquin Rodriguez | Alejandro Valverde Chris Horner | Alejandro Valverde Samuel Sánchez | Amets Txurruka | Christian Meier | Team RadioShack |
| 6.0 | Chris Horner | Chris Horner | Alejandro Valverde Samuel Sánchez | Gonzalo Rabuñal | Christian Meier | Team HTC-Columbia |
Question:
Who led team classification during the stage whose winner was Chris Horner?
Answer:
Team HTC-Columbia