Falsehoods about administrative hierarchy
The falsehoods
The falsehoods
Users do not type addresses the way gazetteers store them. They type what they know, in the order they think of it, with the spellings their keyboard supports, trusting autocomplete suggestions they didn't verify. A parser that only handles well-formed addresses fails on real input.
Parsing answers "what kind of thing is each part of this string?". Resolving answers "where is the resulting place?". They are different jobs and Mailwoman keeps them apart on purpose.