City name please.
select t1.city from city as t1 join temperature as t2 on t1.city_id = t2.city_id order by mar limit 1
What was the name of the city whose temperature in March was lower than that in July?
select t1.city from city as t1 join temperature as t2 on t1.city_id = t2.city_id where t2.mar < t2.jul
What was the name of the city whose temperature in March was higher than that in October?
select t1.city from city as t1 join temperature as t2 on t1.city_id = t2.city_id where t2.mar > t2.oct