Negotiations for Event Management Journal: Event Contract Clauses

For this individual journal assignment you are required to address the following in regards to the legal impacts of event specific contract clauses based on the scenario presented:
You are the lead planner for a 400-person annual corporate gala in the event space of a public library. Unfortunately, a guest has tripped on the band’s sound equipment wires. Who is legally responsible for the accident? What contract clause should be included to protect you, as the planner? Who is protected by the inclusion of the above presented clause?