Table: t_1954_f1_race_syracusa
Columns: race_name
circuit
date
winning_driver
constructor
report

Question: Which driver won at the Sachsenring circuit?
SQL: SELECT "winning_driver" FROM t_1954_f1_race_syracusa WHERE "circuit" = 'Sachsenring'

Question: Which constructor was present at the Redex Trophy race?
SQL: SELECT "constructor" FROM t_1954_f1_race_syracusa WHERE "race_name" = 'RedeX Trophy'

Question: How many different constructors had Paul Thiel as a winning driver?
SQL: SELECT COUNT("constructor") FROM t_1954_f1_race_syracusa WHERE "winning_driver" = 'Paul Thiel'