not a valid subject

SQL1 is SELECT id, name, alpha, bold, bodytext, active, meta, intro, plural FROM subjects WHERE name='Irrational Number' OR plural='Irrational Number' ORDER BY alpha DESC LIMIT 1
SQL2 is
SQL3 is SELECT image_id from image_data where property_type='editorial' AND image_id IN (78651, 69777, 23536) LIMIT 1

Array ( [error] => [warning] => [status] => 0 [fields] => Array ( [0] => keywords [1] => participants [2] => setting [3] => caption ) [attrs] => Array ( [published] => 2 [viewable] => 2 [property] => 1 ) [matches] => Array ( [78651] => Array ( [weight] => 2 [attrs] => Array ( [published] => 2012 [viewable] => 2012 [property] => 13 ) ) [69777] => Array ( [weight] => 2 [attrs] => Array ( [published] => 1998 [viewable] => 1998 [property] => 13 ) ) [23536] => Array ( [weight] => 2 [attrs] => Array ( [published] => 2008 [viewable] => 2008 [property] => 13 ) ) ) [total] => 3 [total_found] => 3 [time] => 0.000 [words] => Array ( [irrational] => Array ( [docs] => 96 [hits] => 141 ) [number] => Array ( [docs] => 1450 [hits] => 2684 ) ) )

78651, 69777, 23536