Complex sentence: One of the signature programs in his first term has been the Vacant and Abandoned Properties Initiative, known locally as "1,000 Properties in 1,000 Days", which is a project to repair or demolish targeted properties across the city.
Split into simpler sentences: One of the signature programs in his first term has been an attempt to address vacant and abandoned housing. The Vacant and Abandoned Properties Initiative, known locally as "1,000 Properties in 1,000 Days", is a project to repair or demolish targeted properties across the city.