User question:
user: I'm currently working on a project where I'm analyzing population distribution patterns in various cities. Part of the process involves matching zip codes to their corresponding cities. Right now, I need to find out which city the zip code '10001' belongs to. Could you give me the name of the city that matches this zip code?

Available functions:
name: retrieve_city_based_on_zipcode
description: Finds the city of a zipcode.
parameters: type: dict
properties: zipcode: type: string
description: The zipcode of the city.
required: zipcode

Ground-truth function call(s):
retrieve_city_based_on_zipcode(zipcode='10001')