How many years before the peace ended with  the Habsburgs did the isolated Forest Cantons negotiated a ten-month truce with the Habsburgs?
return the  peace ended with the   Habsburgs  ;return the  isolated Forest Cantons negotiated a ten-month truce with the   Habsburgs  ;return year of #1 ;return year of #2 ;return difference of #3 and  #4
['select', 'select', 'project', 'project', 'arithmetic']