Complex sentence: Stockholm syndrome is named after the Norrmalmstorg robbery of "Kreditbanken" at Norrmalmstorg in Stockholm, Sweden, in which several bank employees were held hostage in a bank vault from August 23 to 28,1973, while their captors negotiated with police.
Split into simpler sentences: Stockholm syndrome is named after the Norrmalmstorg robbery of "Kreditbanken" at Norrmalmstorg in Stockholm, Sweden. During the crime, several bank employees were held hostage in a bank vault from August 23 to 28,1973, while their captors negotiated with police.