passive_rite_learning_activity_apply_effect

passive_rite_learning_activity_apply_effect = {
	if = {
		limit = {
			exists = scope:passive_learn_learner
			scope:passive_learn_learner = {
				exists = involved_activity
				involved_activity = {
					any_attending_character = {
						this != scope:passive_learn_learner
						is_valid_passive_learning_source_at_activity_for_learner_trigger = { LEARNER = scope:passive_learn_learner }
					}
				}
			}
		}
		if = {
			limit = { NOT = { exists = scope:passive_learn_source } }
			scope:passive_learn_learner.involved_activity = {
				random_attending_character = {
					limit = {
						this != scope:passive_learn_learner
						is_valid_passive_learning_source_at_activity_for_learner_trigger = { LEARNER = scope:passive_learn_learner }
					}
					save_scope_as = passive_learn_source
				}
			}
		}
		if = {
			limit = { exists = scope:passive_learn_source }
			scope:passive_learn_learner = {
				random_list = {
					50 = {
						trigger = {
							any_character_tenet = {
								knowledge_filter = unknown
								passive_rite_learning_candidate_tenet_is_core_trigger = { RITE = scope:passive_learn_source.rite }
								count >= 1
							}
						}
						passive_rite_learning_pick_and_apply_tenet_abroad_effect = yes
					}
					50 = {
						trigger = {
							any_character_doctrine = {
								knowledge_filter = unknown
								passive_rite_learning_candidate_doctrine_is_core_trigger = { RITE = scope:passive_learn_source.rite }
								passive_rite_learning_doctrine_is_learnable_trigger = yes
								count >= 1
							}
						}
						passive_rite_learning_pick_and_apply_doctrine_abroad_effect = yes
					}
				}
			}
		}
	}
}

As written in game/common/scripted_effects/passive_rite_learning_effects.txt.