List the plats that attended Wilfrid Laurier University. 
CREATE TABLE table_18042409_1 (player VARCHAR, alma_mater VARCHAR)
SELECT player FROM table_18042409_1 WHERE alma_mater = "Wilfrid Laurier University"
### Context: CREATE TABLE table_18042409_1 (player VARCHAR, alma_mater VARCHAR) ### Question: List the plats that attended Wilfrid Laurier University.  ### Answer: SELECT player FROM table_18042409_1 WHERE alma_mater = "Wilfrid Laurier University"