Specifies the user OR app (we can figure out user by using State - Extracted/Entered; thus UidChanger will either use App/Account as Id, or User's Id)

Confidence

Direction: To or From To means that relationship starts on this entity (THIS entity "is ..." for REFERENCED entity) From means that relationship starts on referenced entity (REFERENCED entity "is ..." for THIS entity) (e.g., "Referenced Entity" "Is Author Of" "another entity", or "another entity" "Is Sent By" "Referenced Entity")

Entity's Id

Entity's Model Id

Relation: e.g., "Is Author Of", or "Is Sent By", etc. As we want the system to be extendable, we should not specify kinds of things using hard coding, but by using strings (via the Constants)

(Optional) Used to define a given Relationship

(Optional) Used to define a given Relationship

This allows us to cheaply identify not only if this fragment was extracted automatically or created manually, but also identify if it is deleted or not