Sentence: Construction of 11 Diagonal Street began in 1978 and finished in 1983 with 20 floors. The architect was Helmut Jahn.

What data can be extracted from this sentence?
11 Diagonal Street, completionDate, 1983; 11 Diagonal Street, floorCount, 20; 11 Diagonal Street, architect, Helmut Jahn; 11 Diagonal Street, buildingStartDate, "1978"