Complex sentence: They got married in Provincetown (at the top of the Provincetown Monument) in October, 2005 and under the UK's Civil Partnership Act 2004 Jorge was able to move to the UK as Clayton's partner.
Split into simpler sentences: They got married in Provincetown (at the top of the Provincetown Monument) in October, 2005. Under the UK's Civil Partnership Act 2004 Jorge was thus able to move to the UK as Clayton's partner.