SELECT First_year ,  Last_year FROM party WHERE Party_Theme  =  "Spring" OR Party_Theme  =  "Teqnology"
Show the first year and last year of parties with theme "Spring" or "Teqnology".
CREATE TABLE "party" (
"Party_ID" int,
"Party_Theme" text,
"Location" text,
"First_year" text,
"Last_year" text,
"Number_of_hosts" int,
PRIMARY KEY ("Party_ID")
);
CREATE TABLE "host" (
"Host_ID" int,
"Name" text,
"Nationality" text,
"Age" text,
PRIMARY KEY ("Host_ID")
);
CREATE TABLE "party_host" (
"Party_ID" int,
"Host_ID" int,
"Is_Main_in_Charge" bool,
PRIMARY KEY ("Party_ID","Host_ID"),
FOREIGN KEY ("Host_ID") REFERENCES `host`("Host_ID"),
FOREIGN KEY ("Party_ID") REFERENCES `party`("Party_ID")
);
INSERT INTO  "party" VALUES (1,"Spring","Hemkade 48 Zaandam","2000","2001","5");
INSERT INTO  "host" VALUES (1,"Austin Daye","United States",43);
INSERT INTO  "party_host" VALUES (1,1,"T");