Table: rafael_nadal_davis_cup
Columns: edition
round
date
partnering
against
surface
opponents
w_l
result

Question: Name the partnering for round sf
SQL: SELECT "partnering" FROM rafael_nadal_davis_cup WHERE "round" = 'SF'

Question: Name the total number of round for against the netherlands
SQL: SELECT COUNT("round") FROM rafael_nadal_davis_cup WHERE "against" = 'The Netherlands'

Question: Name the round for john van lottum martin verkerk
SQL: SELECT "round" FROM rafael_nadal_davis_cup WHERE "opponents" = 'John Van Lottum Martin Verkerk'

Question: Name the w/l for czech republic
SQL: SELECT "w_l" FROM rafael_nadal_davis_cup WHERE "against" = 'Czech Republic'

Question: Name the result for jiří novák radek štěpánek
SQL: SELECT "result" FROM rafael_nadal_davis_cup WHERE "opponents" = 'Jiří Novák Radek Štěpánek'