Thematic queries

Task

1. How many bakeries are there in Muenster?
2. How many hotels and hostels are there in Muenster?
3. Where is the A1?
4. How many “recreation_ground” are Freibäder? (i.e. have “Freibad” or “freibad” in their name)

Overview of logical operators

from: Phillips 2018 - YaRrr! The Pirate’s Guide to R