CREATE TABLE candidate (Candidate_ID INT, People_ID INT, Poll_Source TEXT, Date TEXT, Support_rate FLOAT, Consider_rate FLOAT, Oppose_rate FLOAT, Unsure_rate FLOAT)
CREATE TABLE people (People_ID INT, Sex TEXT, Name TEXT, Date_of_Birth TEXT, Height FLOAT, Weight FLOAT)

A bar chart shows the distribution of Date_of_Birth and Weight .
SELECT Date_of_Birth, Weight FROM people
SELECT "Date_of_Birth", "Weight" FROM "people"