table: [['number', 'name', 'builder', 'type', 'works number', 'date'], ['1', 'elidir', 'hunslet', '0 - 4 - 0 st', '493', '1889'], ['2', 'thomas bach', 'hunslet', '0 - 4 - 0 st', '894', '1904'], ['3', 'dolbadarn', 'hunslet', '0 - 4 - 0 st', '1430', '1922'], ['3', 'maid marian', 'hunslet', '0 - 4 - 0 st', '822', '1903'], ['7', 'topsy', 'ruston hornsby', '4wdm', '441427', '1961'], ['8', 'twll coed', 'ruston hornsby', '4wdm', '268878', '1952'], ['11', 'garrett', 'ruston hornsby', '4wdm', '198286', '1939'], ['12', 'llanelli', 'ruston hornsby', '4wdm', '451901', '1961']]
ref: Elidir was built earlier than Thomas Bach was built
template: [ENT] was built earlier than [ENT] was built