Complex sentence: The laws in Slovenia and Finland are expected to take effect in 2015 and on 1 March 2017, respectively; in addition, following a constitutional referendum, Ireland is expected to introduce legislation in 2015 making same-sex marriage legal.
Split into simpler sentences: The laws in Slovenia and Finland are expected to take effect in 2015 and on 1 March 2017, respectively. In addition, following a constitutional referendum, Ireland is expected to introduce legislation in 2015 making same-sex marriage legal.