The web site http://nominatim.openstreetmap.org/ offers a search service http://nominatim.openstreetmap.org/search/ that when given a street name will return occurrences of such street name, each one with characterizing information such as longitude and latitude. In this challenge, you should write an expression that returns a collection of location using for example a pair whose key is the description of the location and the value its latitude and longitude.
For example we did a query with Rue de Paris and we selected two results and they are as follows:
STON
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to build a pair.