object_id,object_type,comment_id
GDL,stop_area,comment:kept:1
CHAM,stop_point,comment:kept:1
B42,line,comment:kept:1
M1F,route,comment:kept:1
M1B1_R,trip,comment:kept:2
stoptime:5,stop_time,comment:kept:1
stoptime:8,stop_time,comment:kept:3