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_name_19 (season VARCHAR, acquisition_via VARCHAR, school_club_team VARCHAR)

### Question ###
What season did School/Club Team, East have an Acquisition via of trade?

### Accurate SQL ###

SELECT season FROM table_name_19 WHERE acquisition_via = "trade" AND school_club_team = "east"