UPDATE persons SET phase = null WHERE id_person = 'person15';
UPDATE persons SET phase = null WHERE id_person = 'person255';
UPDATE persons SET phase = null WHERE id_person = 'person27';
UPDATE persons SET phase = null WHERE id_person = 'person368';
UPDATE persons SET phase = null WHERE id_person = 'person6';
UPDATE persons SET phase = null WHERE id_person = 'person62';
UPDATE persons SET phase = null WHERE id_person = 'person171';
UPDATE persons SET phase = null WHERE id_person = 'person335';
UPDATE persons SET phase = null WHERE id_person = 'person364';
UPDATE persons SET phase = null WHERE id_person = 'person40';
UPDATE persons SET phase = null WHERE id_person = 'person98';
