[lemma=of] [tag=□] □
[lemma=of] [tag="PRP$"] □
[lemma=of] [tag=NNS] □
Some of its manuscripts ( as many as forty are extant ) bear a colophon declaring that it was completed on 25 August 1255 ; in others , the date varies as to day and month ; but in the majority , the colophon is absent altogether .