CREATE TABLE "body_builder" (
"Body_Builder_ID" int,
"People_ID" int,
"Snatch" real,
"Clean_Jerk" real,
"Total" real,
PRIMARY KEY ("Body_Builder_ID"),
FOREIGN KEY ("People_ID") REFERENCES `people`("People_ID")
)

CREATE TABLE "people" (
"People_ID" int,
"Name" text,
"Height" real,
"Weight" real,
"Birth_Date" text,
"Birth_Place" text,
PRIMARY KEY ("People_ID")
)
SELECT Birth_Place FROM people GROUP BY Birth_Place HAVING COUNT(*)  >=  2
What are the birth places that are shared by at least two people?