coat of arms of zaanstad is a heraldic variation of the field tincture with coat of arms of what heraldic variation?
(AND symbols.heraldic_variation_of_the_field (JOIN (R symbols.heraldic_variation_of_the_field_color.variation_of_the_field) (JOIN symbols.heraldic_variation_of_the_field_color.coat_of_arms m.05d1hx8)))