E/C.12/YEM/CO/2 The Committee recommends that the State party continue its efforts to eradicate illiteracy and alleviate its causes, including through effective implementation, monitoring, assessment, and funding of its Illiteracy Eradication and Adult Education Strategy, and provide information on the results achieved year by year in its next periodic report. 31. The Committee is deeply concerned about the insufficient attention by the State party to its obligation under the Covenant concerning cultural rights, as revealed by the total absence of information within the periodic report, as well as by the lack of answers to the list of issues related to article 15 of the Covenant (art. 15). The Committee requests the State party to provide in its next periodic report detailed information on concrete measures taken to guarantee the enjoyment of the rights recognized in article 15 of the Covenant, in particular by minorities and other disadvantaged and marginalized individuals and groups. The Committee recommends that the State party collect disaggregated data on the ethnic composition of the society, as well as on disadvantaged and marginalized individuals and groups, in order to enable it to adopt concrete and targeted measures to fully implement article 15 of the Covenant. 32. The Committee encourages the State party to consider signing and ratifying the Optional Protocol to the Covenant. 33. The Committee encourages the State Party to submit an updated version of its common core document, in accordance with the harmonized guidelines on reporting under the international human rights treaties, in particular those on the common core document, as adopted by the fifth inter-Committee meeting of the human rights treaty bodies held in June 2006 (HRI/MC/2006/3). 34. The Committee requests the State party to disseminate the present concluding observations widely among all levels of society, in particular among State officials, the judiciary and civil society organizations, to translate and publicize them as far as possible and to inform the Committee of the steps taken to implement them in its next periodic report. It also encourages the State party to engage all the relevant actors, including non-governmental organizations and other members of civil society, in the process of discussion at the national level prior to the submission of its next periodic report. 35. The Committee requests the State party to submit its third periodic report, prepared in accordance with the revised reporting guidelines of the Committee, adopted in 2008 (E/C.12/2008/2), by 30 June 2013. 8