<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def default_provenance():
 """The provenance for the default values. :return: default provenance. :rtype: str """

    field = TextParameter()
    field.name = tr('Provenance')
    field.description = tr('The provenance of minimum needs')
    field.value = 'The minimum needs are based on BNPB Perka 7/2008.'
    return field