Martti Ahtisaari is ranked 5th by length of term as President of Finland.
[['Martti Ahtisaari', 'RANK_BY_LENGTH_OF_TERM(S)', '5'], ['[TABLECONTEXT]', 'PRESIDENT_OF_THE_REPUBLIC', 'Martti Ahtisaari'], ['[TABLECONTEXT]', '[TITLE]', 'List of Presidents of Finland by time in office']]