$tax_query = array( array( 'taxonomy' => 'All Object Topics', 'terms' => 'Object Topic', 'field' => 'term_id', 'operator' => 'IN', 'include_children' => true, ), array( 'taxonomy' => 'All Object Render Modes', 'terms' => 'Object Source', 'field' => 'term_id', 'operator' => 'IN', 'include_children' => true, ), array( 'taxonomy' => 'All Object Dev Cycles', 'terms' => 'Dev Cycle', 'field' => 'term_id', 'operator' => 'IN', 'include_children' => true, ), array( 'taxonomy' => 'All Object Sources', 'terms' => 'Object Source', 'field' => 'term_id', 'operator' => 'IN', 'include_children' => true, ), );