sentences:  The parents traditionally arrange marriages for their sons and daughters, although, with the modernization of Nepali society, an increasing number of young people choose their own partners.Among the Shresthas, since they are subdivided into two general sub-castes, the higher Chatharīya and the lower Pāñcthariya, one's marriage partner must be from the same grade as well.Rajopadhyaya and higher Chatharīya clans also try to avoid "Sa-Gotra" marriages; marrying someone of the same gotra.