The tables like below show whether the same hash value results from similar sentences.
First table:
select @sig:=sig, @cnt:=anz from (select hash as sig, count(*) as anz from para_s group by hash order by anz desc limit 1) aa;
select hash, @cnt, sentence from sentences s, para_s p where s.s_id=p.s_id and hash=@sig limit 10;
4.7.3.1 Most Frequent Hash Values For Sentences