Facebook group posts extraction

code.prolog

posts(GroupUrl, Posts):-
    Query = _{
        wait: 5300,
        url: GroupUrl,
        extract: _{
            posts: _{
                type: collection,
                selector: '.userContentWrapper',
                extract: _{
                    title: _{ selector: 'h5' },
                    url: _{
                        selector: 'h5 + div > div > span > span > a',
                        property: 'href'
                    },
                    texts: _{
                        type: collection,
                        selector: '.userContent',
                        extract: _{
                            text: _{ selector: ':root' }
                        }
                    }
                }
            }
        }
    },
    query(Query, Response),
    maplist(drop_empty_texts, Response.posts, Posts).