Infer word id from source id
Infer word id from source id

Fixes sorting issues in the text - the xml nodes are not in the
correct order due to grammatical reasons.

PonteIneptique/arethusa,alpheios-project/arethusa,fbaumgardt/arethusa,latin-language-toolkit/arethusa,fbaumgardt/arethusa,Masoumeh/arethusa,alpheios-project/arethusa,fbaumgardt/arethusa,Masoumeh/arethusa,latin-language-toolkit/arethusa,alpheios-project/arethusa,PonteIneptique/arethusa