object3(I,O,sentence):-
 object3(I,R,noun_group),
 object3(R,O,verb_group).

object3(I,O,verb_group):-
 object3(I,R,verb),
 object3(R,O,noun_group).
        
object3(I,O,noun_group):-
 object3(I,R,adj),
 object3(R,O,noun).
            
object3(I,O,adj):-
 object3(I,O,adjective).
        
object3(I,I,adj).
        
object3(['профессиональный'|R],R,adjective).
object3(['любительский'|R],R,adjective).
object3(['начальный'|R],R,adjective).
object3(['детский'|R],R,adjective).       
object3(['футбол'|R],R,noun).
object3(['хоккей'|R],R,noun).  
object3(['бейсбол'|R],R,noun).
object3(['регби'|R],R,noun).  
object3(['баскетбол'|R],R,noun).  
object3(['волейбол'|R],R,noun).   
object3(['играть'|R],R,verb). 
object3(['увлекаться'|R],R,verb).
object3(['смотреть'|R],R,verb). 
object3(['заниматься'|R],R,verb).
 

Prolog online compiler

Write, Run & Share Prolog code online using OneCompiler’s Prolog online compiler for free. It’s a simple and intuitive platform to experiment with logic programming in Prolog. OneCompiler supports standard Prolog syntax, great for learning, prototyping, and practicing logic-based problems.

About Prolog

Prolog (Programming in Logic) is a logic programming language associated with artificial intelligence and computational linguistics. It works through facts, rules, and queries, using a form of symbolic reasoning known as backward chaining. Prolog is declarative, meaning you describe what you want instead of how to compute it.

Sample Code

The following is a simple Prolog program that prints a greeting:

:- initialization(main).

main :-
    write('Hello, World!').

Syntax Basics

Facts

Facts represent basic assertions about the world.

likes(alice, pizza).
likes(bob, pasta).

Rules

Rules define logical relationships using facts.

friends(X, Y) :- likes(X, Z), likes(Y, Z).

Queries

Queries are used to find information based on facts and rules.

?- likes(alice, What).

Operators

OperatorDescription
:-Rule definition
,Logical AND
;Logical OR
=Unification

Lists

member(X, [X|_]).
member(X, [_|T]) :- member(X, T).

Recursion

Prolog heavily relies on recursion.

factorial(0, 1).
factorial(N, F) :-
  N > 0,
  N1 is N - 1,
  factorial(N1, F1),
  F is N * F1.

This guide provides a quick reference to Prolog programming syntax and features. Start writing Prolog code using OneCompiler’s Prolog online compiler today!