Complex sentence: Since 2004 the town has been running a local Agenda 21 programme, a UN-sponsored non-political initiative in which the inhabitants of Xàbia/Jávea can have a say in plans for the long-term sustainable development of the town.
Split into simpler sentences: Since 2004 the town has been running a local Agenda 21 programme. This is a UN-sponsored non-political initiative in which the inhabitants of Xàbia/Jávea can have a say in plans for the long-term sustainable development of the town.