Ezafe is an unstressed vowel -e (-ye in some specific occasions)in Persian that occurs at the end of some words and links together elements belonging to a single constituent. It often approximately corresponds in usage to the English preposition “of”. This data includes gold Ezafe tags in almost 30 thousand Persian sentences. The sentences were manually annotated by six annotators who where all native Persian speakers and linguists. The inter-annotator agreement of a small portion of the data (one thousand sentences) is 99.6%.