<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def unassign_log_entry_from_log(self, log_entry_id, log_id):
 """Removes a ``LogEntry`` from a ``Log``. arg: log_entry_id (osid.id.Id):
 the ``Id`` of the ``LogEntry`` arg: log_id (osid.id.Id):
 the ``Id`` of the ``Log`` raise: NotFound - ``log_entry_id`` or ``log_id`` not found or ``log_entry_id`` not assigned to ``log_id`` raise: NullArgument - ``log_entry_id`` or ``log_id`` is ``null`` raise: OperationFailed - unable to complete request raise: PermissionDenied - authorization failure *compliance: mandatory -- This method must be implemented.* """

        # Implemented from template for
        # osid.resource.ResourceBinAssignmentSession.unassign_resource_from_bin
        mgr = self._get_provider_manager('LOGGING', local=True)
        lookup_session = mgr.get_log_lookup_session(proxy=self._proxy)
        lookup_session.get_log(log_id)  # to raise NotFound
        self._unassign_object_from_catalog(log_entry_id, log_id)