Find the words cited in papers that are cited by sima01computational?
paper cited by refers to citing_paper_id; citing_paper_id = 'sima01computational';
SELECT DISTINCT T2.word_cited_id FROM cites AS T1 INNER JOIN content AS T2 ON T1.cited_paper_id = T2.paper_id WHERE T1.citing_paper_id = 'sima01computational'
CREATE TABLE cites
(
    cited_paper_id  TEXT not null,
    citing_paper_id TEXT not null,
    primary key (cited_paper_id, citing_paper_id)
);
CREATE TABLE paper
(
    paper_id    TEXT  not null
        primary key,
    class_label TEXT not null
);
CREATE TABLE content
(
    paper_id     TEXT not null,
    word_cited_id TEXT not null,
    primary key (paper_id, word_cited_id),
    foreign key (paper_id) references paper(paper_id)
);
