list all episodes of the first season of the the wb television series supernatural !
select distinct var_uri where brack_open var_uri dbo_series dbr_Supernatural_ attr_open U.S._TV_series attr_close sep_dot var_uri dbo_seasonNumber 1 sep_dot dbr_Supernatural_ attr_open U.S._TV_series attr_close dbo_network dbr_The_WB brack_close