En la reunión, hemos discutido lo que ha acontecido la semana pasada.
In the meeting, we discussed what has happened last week.
Context: work Lo que ha acontecido en el barrio ha preocupado a los vecinos.
What has happened in the neighborhood has worried the residents.
Context: society Desde que ha acontecido el accidente, la carretera ha estado cerrada.
Since the accident has happened, the road has been closed.
Context: society