Table: tallest_buildings_ro
Columns: rank
building
city
height_m_ft
built

Question: What is the sum of Rank with a build year earlier than 2007 for the howard johnson hotel bucharest?
SQL: SELECT SUM("rank") FROM tallest_buildings_ro WHERE "built" < 2007 AND "building" = 'howard johnson hotel bucharest'

Question: What is the Height (m/ft) for bucharest Built in 2009, and a Rank of 13?
SQL: SELECT "height_m_ft" FROM tallest_buildings_ro WHERE "city" = 'bucharest' AND "built" = 2009 AND "rank" = 13

Question: What city is the bucharest tower center (btc) located in?
SQL: SELECT "city" FROM tallest_buildings_ro WHERE "building" = 'bucharest tower center (btc)'

Question: What is the name of the building in Bucharest with a rank of less than 12?
SQL: SELECT "building" FROM tallest_buildings_ro WHERE "city" = 'bucharest' AND "rank" < 12

Question: What city was the building built in 1988?
SQL: SELECT "city" FROM tallest_buildings_ro WHERE "built" = 1988