Define a constraint between two datetime entities

[zigzago]

My use case :

en : "I leave on July 10, I go back two days later"
fr : "Je pars le 10 juillet, je reviens deux jours après"

outwardDate : July 10
inwardDate : (July 12) or (today + 2 days) ? -> wit.ai returns today + 2 days

If we can define a relation like "inwardDate depends on outwardDate", then inwardDate would be parsed with outwardDate parsing result as context date, and all would be fine :)

[l5t]

So sorry for the late reply... this is indeed a great enhancement for Duckling. I moved it here to keep track of it:facebookarchive/duckling_old#90