Table: silva_german_results
Columns: year
competition
venue
position
event

Question: Which Venue has an Event of marathon, and a Year larger than 1995, and a Position of 4th?
SQL: SELECT "venue" FROM silva_german_results WHERE "event" = 'marathon' AND "year" > 1995 AND "position" = '4th'

Question: Which Position has an Event of 10,000 m, and a Competition of world championships, and a Year larger than 1993?
SQL: SELECT "position" FROM silva_german_results WHERE "event" = '10,000 m' AND "competition" = 'world championships' AND "year" > 1993