disburse_chariot_race_activity_charioteer_rewards

disburse_chariot_race_activity_charioteer_rewards = {
	# Give them some xp based on place finished
	if = {
		limit = { this = scope:activity.var:first_place }
		scope:activity = {
			add_activity_log_entry = {
				key = charioteer_gained_trait_xp_key
				score = 110
				character = scope:activity.var:first_place
				scope:activity.var:first_place = {
					distribute_charioteer_trait_xp_effect = { VALUE = 15 } }
			}
		}
	}
	else_if = {
		limit = { this = scope:activity.var:second_place }
		scope:activity = {
			add_activity_log_entry = {
				key = charioteer_gained_trait_xp_key
				score = 110
				character = scope:activity.var:second_place
				scope:activity.var:second_place = { distribute_charioteer_trait_xp_effect = { VALUE = 12 } }
			}
		}
	}
	else_if = {
		limit = { this = scope:activity.var:third_place }
		scope:activity = {
			add_activity_log_entry = {
				key = charioteer_gained_trait_xp_key
				score = 110
				character = scope:activity.var:third_place
				scope:activity.var:third_place = { distribute_charioteer_trait_xp_effect = { VALUE = 8 } }
			}
		}
	}
	else = {
		scope:activity = {
			add_activity_log_entry = {
				key = charioteer_gained_trait_xp_key
				score = 110
				character = prev
				prev = { distribute_charioteer_trait_xp_effect = { VALUE = 3 } }
			}
		}
	}
}

As written in game/common/scripted_effects/07_dlc_ep3_scripted_effects.txt.