The student hukou status of a primary school in city S is relatively complicated. The hukou of all third-year students is in this city, and the hukou of some second-year students is also in this city. Not in this city. Based on this, can it be launched? ['All second-year students are not children of migrant workers.', 'Some migrant children are third-grade students.', 'Some students with household registration in this city are third-grade students.', 'Some first-year students are not children of migrant workers.']