Karen_tax
$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => 'portfolio-type', 'terms' => '4', 'field' => 'term_id', 'operator' => 'NOT IN', ), );
$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => 'portfolio-type', 'terms' => '4', 'field' => 'term_id', 'operator' => 'NOT IN', ), );