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20200525-test_tax

$tax_query = array(
	'relation' => 'AND',
	array(
		'taxonomy'         => 'animal',
		'terms'            => 'panda',
		'field'            => 'slug',
	),
	array(
		'relation' => 'OR',
		array(
			'taxonomy'         => 'food',
			'terms'            => 'sasa',
			'field'            => 'slug',
		),
		array(
			'taxonomy'         => 'zoo',
			'terms'            => 'ueno',
			'field'            => 'slug',
		),
	),
);