Explanation for relations
DETECTION: happy_long_rel
Towns (3 >= 3): {'Казань', 'Санкт-Петербург', 'Москва'} 
happy_long_rel is 3/20 = 35% > 10

DETECTION: sametitle_rel
Titles: 2
Hirel (20 >= 3) and sametitle_rel 10% <= 50%
sametitle_rel is 2/20 = 10%