Cabinet Decision No. 39 of 2019, Article 2, clarifies tax exemptions under Qatar Income Tax Law 24 of 2018. It details treatments for interest on public debt, capital gains from revaluation, and specific conditions for maritime and air navigation companies. Key provisions include the requirement for substantial activity for specific exemptions and the criteria for resident legal persons owned by Qataris or GCC nationals. Additionally, it defines the average number of workers calculation and specifies that industrial activities related to agriculture or fishing remain taxable unless otherwise exempted.