Lutheran churches of the Evangelical Church in Germany allow blessing ceremonies for same-sex couples, as do Unitarian Universalist churches. Further religious conflicts These developments have created a political and religious reaction in some countries, including in England, where the Church of England, after long debate, officially banned blessings of gay couples by Church of England clergy, and in the United States, which continues to experience conflicts, based upon religious grounds. Kinship restrictions Kinship is two people that are related by blood or adoption, such as brother, sister, mother, father, aunt, uncle etc. No European country prohibits marriage between first cousins. The U.S. is the only western country with cousin marriage restrictions. Societies have often placed restrictions on marriage to relatives, though the degree of prohibited relationship varies widely. In most societies, marriage between brothers and sisters has been forbidden, with ancient Egyptian, Hawaiian, and Inca royalty being prominent exceptions. In many societies, marriage between first cousins is preferred, while at the other extreme, the medieval Catholic Church prohibited marriage even between distant cousins. In the United Kingdom, the Deceased Wife's Sister's Marriage Act 1907 removed the previous prohibition for a man to marry the sister of his deceased wife. In Australia, marriage with an ancestor or descendant is prohibited, as is a marriage between a brother and a sister, whether of whole blood or half-blood and even if the brother or sister has been adopted. All mainstream religions prohibit some marriages on the basis of the consanguinity (lineal descent) and affinity (kinship by marriage) of the prospective marriage partners, though the standards vary. Social restrictions In the Indian Hindu community, especially in the Brahmin caste, marrying a person of the same gotra was prohibited, since persons belonging to the same gotra are said to have identical patrilineal descent. In ancient India, when gurukuls existed, the shishyas (pupils) were advised against marrying any of guru's children, as shishyas were also considered the guru's children and it would be considered marriage among siblings. However, there were exceptions, including Arjuna's son Abhimanyu's marriage to Uttra, the dance student of Arjuna in Mahabharata. The Hindu Marriage Act, 1955 brought reforms in the area of same-gotra marriages, which were banned prior to the act's passage. Now the Indian constitution allows any consenting adult heterosexual couple (women 18 or older and men 21 or older) from any race, religion, caste, or creed to marry. Many societies