Can users tell when info box answers have been auto-generated vs. curated? How often is KG content updated or re-verified, as in the case of businesses changing

Can users tell when info box answers have been auto-generated vs. curated? How often is KG content updated or re-verified, as in the case of businesses changing their operating hours? Are KG verifiers subject matter experts, e.g. medical professionals, or unskilled workers?