[ 0 => "elizabeth" ], * 1 => [ 0 => "is" ], * 2 => [ 0 => "the" ], * 3 => [ 0 => "british", 1 => "english" ], * 4 => [ 0 => "queen", 1 => "monarch" ] * ] * * @param string $phrase * @return array */ public function getSynonymsForPhrase($phrase); }