how can I change the knowledge base?? 1

[puntito]

If i have this in my knowledge base

state(jalisco,jal,guadalajara,6322002).
...

How can the user change the number of the population because it grew.

How can I modify the information of the Knowledge Base.

state(jalisco,jal,guadalajara,6950850).

 

[pimi]

Hello.
How about using retract and assert.

?- state(jalisco,jal,guadalajara,X).
X = 6322002 ;
no

?- retractall(state(jalisco,jal,guadalajara,_)).
yes

?- assertz(state(jalisco,jal,guadalajara,6950850)).
yes

?- state(jalisco,jal,guadalajara,X).
X = 6950850 ;
no