How to extract address into a slot?

How can I extract addresses from user messages as entitty? Is there an existing extractor like Duckling or should I provide examples?

an old blog but could help

you need to train a CRF along wtih some examples for address pattern with lookup tables for common street names etc.

which language? the trickiest part is collecting data as not every country provides a list of open address es but there must be some data available

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