Which star is closer: our sun, Nu Phoenicis, or Gliese 915?
return our sun ;return Nu Phoenicis ;return Gliese 915 ;return how close is #1 ;return how close is #2 ;return how close is #3 ;return which is the  lowest of #4 ,  #5 ,   #6
['select', 'select', 'select', 'project', 'project', 'project', 'comparison']