What are the first year and last year of the parties whose theme is "Spring" or "Teqnology"?
SELECT First_year ,  Last_year FROM party WHERE Party_Theme  =  "Spring" OR Party_Theme  =  "Teqnology"
first year and last year refers to First_year, Last_year; parties whose theme is 'Spring' or 'Teqnology' refers to Party_Theme = 'Spring' OR Party_Theme = 'Teqnology';