claim: Yemen is the fourth-largest country in the Arabian peninsula.
evidence: The OCP Group -LRB- formerly the Office cherifien des phosphates -RRB- , founded on August 7 , 1920 in Morocco and transformed into a limited company -LRB- OCP SA -RRB- in 2008 , is one of the leading exporters of phosphate rock , phosphoric acid and phosphate fertilizers in the world .. Morocco. Morocco. The OCP Group has nearly 20,000 employees located mainly in 4 mining sites and two chemical complexes in Morocco , as well as in other international locations .. Morocco. Morocco. The group has several subsidiaries in and outside of Morocco .. Morocco. Morocco. In 2015 , its turnover amounted to US $ 4.575 billion .