What medium was used for the sculpture by Ernest Richard Gause? 
CREATE TABLE table_20903658_1 (medium VARCHAR, artist VARCHAR)
SELECT medium FROM table_20903658_1 WHERE artist = "Ernest Richard Gause"
### Context: CREATE TABLE table_20903658_1 (medium VARCHAR, artist VARCHAR) ### Question: What medium was used for the sculpture by Ernest Richard Gause?  ### Answer: SELECT medium FROM table_20903658_1 WHERE artist = "Ernest Richard Gause"