Question: What was the first  form of shopping precinct or shopping center, in which one or more buildings form a complex of shops representing merchandisers with interconnecting walkways that enable customers to walk from unit to unit in Brasília?
Sentence (from "Asematunneli"): The interconnecting areas provide for convenient movement across a wide area of central Helsinki, and allow pedestrians to escape the rain, snow, and cold weather that dominate much of the Finnish calendar.
Relevant evidence: No