Table: tallest_buildings_halifax
Columns: building
height
floors
year
status

Question: For the Year 2013 what building(s) had more than 15 Floors?
SQL: SELECT "building" FROM tallest_buildings_halifax WHERE "floors" > 15 AND "year" = '2013'

Question: For the Year 2013 what building(s) had less than 20 Floors?
SQL: SELECT "building" FROM tallest_buildings_halifax WHERE "year" = '2013' AND "floors" < 20