Table: player_transfer_2
Columns: nat
name
moving_from
type
transfer_window
ends

Question: Who is moving from Treviso with a loan return?
SQL: SELECT "name" FROM player_transfer_2 WHERE "moving_from" = 'treviso' AND "type" = 'loan return'

Question: What is the nationality of Acquafresca?
SQL: SELECT "nat" FROM player_transfer_2 WHERE "name" = 'acquafresca'

Question: What is the type if the transfer window is summer and the moving from category is free agent?
SQL: SELECT "type" FROM player_transfer_2 WHERE "transfer_window" = 'summer' AND "moving_from" = 'free agent'

Question: What is the transfer window for the moving from of São Paulo?
SQL: SELECT "transfer_window" FROM player_transfer_2 WHERE "moving_from" = 'são paulo'

Question: What is the moving from with a transfer and the nationality of Bra?
SQL: SELECT "moving_from" FROM player_transfer_2 WHERE "type" = 'transfer' AND "nat" = 'bra'

Question: What is the end date for Maaroufi?
SQL: SELECT "ends" FROM player_transfer_2 WHERE "name" = 'maaroufi'