Table: vline_p_class
Columns: locomotive
pre_conversion
entered_service_t
re_entered_service_p
owner

Question: Who owns the item that was a T326 before conversion and re-entered service on 11 September 1985?
SQL: SELECT "owner" FROM vline_p_class WHERE "re_entered_service_p" = '11 september 1985' AND "pre_conversion" = 't326'

Question: What date did the T328 that entered service on 18 June 1956 re-enter service?
SQL: SELECT "re_entered_service_p" FROM vline_p_class WHERE "entered_service_t" = '18 june 1956' AND "pre_conversion" = 't328'

Question: Which of V/Line Passenger's pre-conversions re-entered service on 23 November 1984?
SQL: SELECT "pre_conversion" FROM vline_p_class WHERE "owner" = 'v/line passenger' AND "re_entered_service_p" = '23 november 1984'

Question: Who owns the locomotive that entered service on 30 October 1956?
SQL: SELECT "owner" FROM vline_p_class WHERE "entered_service_t" = '30 october 1956'