Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_11900773_5 (paper_type VARCHAR, theme VARCHAR)

### Question ###
What is the paper type of the University of Saskatchewan themed stamp?

### Accurate SQL ###

SELECT paper_type FROM table_11900773_5 WHERE theme = "University of Saskatchewan"