The following tables include information about tourists, their organizations, some organizations may have planned tours and information is kept about the tourists to participate in each tour; a tourist may work-for more than one organization. A tourist may participate in any tour whether organized by his/her organization or not. Each tourist has a city and a country where they live which may be different than their citizenship. Note that tid means tourist ID, code means tour code, org_name means organization name, sin_fd1 and sin_fd2 represent sin numbers of a person and his/her friend, citizenship is a country Tour(code, city, country, time, day) Participate(tid, code, class) Works-for(tid,org-name) Tourist(tid, sin, name, citizenship, city, country, age, gender) Organization(name, code, leader-tid, leader-sin, city, year_started) Friend(sin fdl, sin fd2) Code the following queries in Tuple Relational Calculus: g) Find id's of leaders of organizations which have only workers who live in Brazil? h) Find tours in Belgium managed by organizations who have leaders who live in Ireland and have at least one friend who lives in India