Sentence:The [e1]data[/e1] are derived primarily from a three-nation [e2]survey[/e2] conducted for the Harvard School of Public Health and The Robert Wood Johnson Foundation by Louis Harris and Associates and its international affiliates between 10 June and 14 September 1994.
 e1: data. 
 e2 : survey.
Answer: Entity-Origin(e1,e2)