Topic marker from locative/allative adpositions

[Giorgio Iemmolo]

Dear typologists, 

if anyone knows of a language that has developed a topic marker
(preferably for non-subject arguments) from locative or allative
adpositions, please let me know at giorgio.iemmolo at unipv.it.
 
Thank you in advance. 

Giorgio Iemmolo

-- 
Giorgio Iemmolo
Dipartimento di Linguistica
Università degli Studi di Pavia
Strada Nuova, 65
I- 27100 Pavia, Italy
e-mail: giorgio.iemmolo at unipv.it
http://lettere.unipv.it/diplinguistica/pagina.php?id=169