platform/plugins/activity-assets/lang/en.json

{
  "string": {
    "Delete": "Delete",
    "Edit": "Edit",
    "Edited": "edited",
    "DocCreated": "created {_class}",
    "DocDeleted": "deleted {_class}",
    "Activity": "Activity",
    "Changed": "changed",
    "To": "to",
    "Unset": "unset",
    "System": "System",
    "CollectionUpdated": "Update {collection}"
  }
}