Hi, thanks for your effort on developing this useful tool~

I follow the instruction to create index by

    propertyIndexAdd()
    entitiesIndexAdd()

but got error
FileNotFoundError: [Errno 2] No such file or directory: '../data/dbpredicateindex.json'

I want to use falcon2 as a relation linking tool, what should I do?

Besides, I find my import speed is very very slow when I import the wikidataentity.json into elasticsearch, do you have any idea about it?

Thanks.