Passage: Registered partnerships (Finnish: rekisteröity parisuhde; Swedish: registrerat partnerskap) in Finland were created for same-sex couples in 2002. The legislation, granting similar rights and responsibilities to same-sex couples as to married opposite-sex couples, was passed by the Parliament in September 2001 with votes 99–84. In May 2009, the Parliament revised the law allowing couples to adopt the biological children of their partner. Registered partnerships, which were available only to same-sex couples, were registered and dissolved using a procedure similar to that for civil marriages. The legislation also granted immigration rights to a same-sex foreign partner of a Finnish citizen. The registered partnership law was repealed on 1 March 2017 after same-sex marriage legislation came into effect.

Question: Whose children can couples adopt?
biological children of their partner