I’m completely new with OpenRefine and I’m using v3.2 to upload a little dataset listing the new public domain Spanish authors published by the Spanish National Library. My present task is extract some codes (ISNI, VIAF and BNE) set in a common field into individual columns for matching with Wikidata. I found I can extract the correct value (removing the URL) with this GREL expression:
The screenshot will explain better.
To my surprise this expression finally doesn’t work o_0
What I’m doing wrong? Thanks in advance.