Give the name of the tallest athlete from Sweden.
the tallest athlete refers to id where MAX(height); from Sweden refers to region_name = 'Sweden'; name refers to full_name;
SELECT T3.full_name FROM noc_region AS T1 INNER JOIN person_region AS T2 ON T1.id = T2.region_id INNER JOIN person AS T3 ON T2.person_id = T3.id WHERE T1.region_name = 'Sweden' ORDER BY T3.height DESC LIMIT 1