The Particle 에서
The particle is added to a noun or particle and has various meanings.
에서 is used to indicate that an action continuously takes place at a location.
에서 is used to indicate a starting point.
에서 is used to indicate a source from which something is derived.
A:A: I wonder if it will continue to rain even on this weekend?
B: .B: It does not seem so. The weather forecast says it will be clear.
에서 may indicate the reason for doing an action.
Similar to the / 에서 may indicate the topic of a clause.