\set ECHO none
remove_provenance

(1 row)
name|city|shapley
Ellen|Berlin|0.093
Susan|Berlin|0.264
John|New York|0.037
Paul|New York|0.080
Dave|Paris|0.056
Magdalen|Paris|0.113
Nancy|Paris|0.156
(7 rows)
remove_provenance

(1 row)
name|city|shapley
Ellen|Berlin|-0.036
Susan|Berlin|-0.036
John|New York|-0.036
Paul|New York|-0.036
Dave|Paris|0.048
Magdalen|Paris|0.048
Nancy|Paris|0.048
(7 rows)
remove_provenance

(1 row)
city|shapley
Berlin|0.120
Berlin|0.420
New York|0.080
New York|0.180
Paris|0.060
Paris|0.140
Paris|0.210
(7 rows)