Table: player_transfer
Columns: nat
name
moving_from
type
transfer_window
ends
transfer_fee

Question: What was the transfer fee for the player ending in 2011 and moving from Thrasyvoulos?
SQL: SELECT "transfer_fee" FROM player_transfer WHERE "ends" = 2011 AND "moving_from" = 'thrasyvoulos'

Question: What was the transfer fee for the player moving in the winter window and ending in a year after 2010?
SQL: SELECT "transfer_fee" FROM player_transfer WHERE "ends" > 2010 AND "transfer_window" = 'winter'