obl:mod: oblique modifier
The obl:mod relation for nominal adjuncts.
They can be (but are not always) introduced by a preposition.
Here is an example from UD_Haitian_Creole-Autogramm :
Tsai pati kite Taiwan Mekredi \n Tsai left Taïwan on Wednesday
obl:mod (pati, Mekredi)
Jou sa lapli te kòmanse tonbe \n That day, it started to rain
obl:mod (kòmanse, Jou)
obl:mod in other languages: [bej] [ess] [fr] [gya] [ha] [ht] [pay] [pcm]