CREATE TABLE organizations (organization_id NUMBER, date_formed TIME, organization_name CLOB, uk_vat_number CLOB)
CREATE TABLE party_forms (party_id NUMBER, form_id NUMBER, date_completion_started TIME, form_status_code CLOB, date_fully_completed TIME)
CREATE TABLE services (service_id NUMBER, service_type_code CLOB, service_name CLOB, service_descriptio CLOB)
CREATE TABLE party_addresses (party_id NUMBER, address_id NUMBER, date_address_from TIME, address_type_code CLOB, date_address_to TIME)
CREATE TABLE individuals (individual_id NUMBER, individual_first_name CLOB, individual_middle_name CLOB, inidividual_phone CLOB, individual_email CLOB, individual_address CLOB, individual_last_name CLOB)
CREATE TABLE forms (form_id NUMBER, form_type_code CLOB, service_id NUMBER, form_number CLOB, form_name CLOB, form_description CLOB)
CREATE TABLE parties (party_id NUMBER, payment_method_code CLOB, party_phone CLOB, party_email CLOB)
CREATE TABLE organization_contact_individuals (individual_id NUMBER, organization_id NUMBER, date_contact_from TIME, date_contact_to TIME)
CREATE TABLE party_services (booking_id NUMBER, customer_id NUMBER, service_id NUMBER, service_datetime TIME, booking_made_date TIME)
CREATE TABLE addresses (address_id NUMBER, line_1_number_building CLOB, town_city CLOB, zip_postcode CLOB, state_province_county CLOB, country CLOB)

Find the last name of the first ever contact person of the organization with the highest UK Vat number.
SELECT t3.individual_last_name FROM organizations AS t1 JOIN organization_contact_individuals AS t2 ON t1.organization_id = t2.organization_id JOIN individuals AS t3 ON t2.individual_id = t3.individual_id WHERE t1.uk_vat_number = (SELECT MAX(uk_vat_number) FROM organizations) ORDER BY t2.date_contact_to LIMIT 1
SELECT "t3"."individual_last_name" FROM "organizations" "t1" JOIN "organization_contact_individuals" "t2" ON "t1"."organization_id" = "t2"."organization_id" JOIN "individuals" "t3" ON "t2"."individual_id" = "t3"."individual_id" WHERE "t1"."uk_vat_number" = (SELECT MAX("uk_vat_number") FROM "organizations") ORDER BY "t2"."date_contact_to" FETCH FIRST 1 ROWS ONLY