How many yards was Schaub's second shortest touchdown pass in the first half?
return Schaub ;return touchdown passes of #1 ;return #2 that are in  first half ;return shortest of #3 ;return #3 besides  #4 ;return shortest of #5 ;return yards of #6
['select', 'project', 'filter', 'aggregate', 'discard', 'aggregate', 'project']