The string submissionstatementdefault seem to be kind of out of normal system. If it is translated into Danish it is also shown in Danish when English lang. has been chosen. If you use the debug setting "Show origin of languages strings" the origin is not shown. If you make a local Danish translation the system keeps using the string from the Danish language pack and not the one in da_local.
OPDATE: Misunderstanding by me, this entry can be deleted - sorry