Error processing prolog rules.

[AI005]

the rule:
parent('Michael Jackson', 'Ala ba'). does not work, why??

[ducsinhvientinhnguyen]

the rule:
parent('Michael Jackson', 'Ala ba'). does not work, why??

parent(Michael Jackson, Ala ba) ... and are you learning at HCMUS ? :v

[AI005]

yes, bro