How many years was it from when Joseph Francois Dupleix arrived in India and when he became the French East India Company's governor?
return Joseph Francois Dupleix arrived in  India ;return Joseph Francois Dupleix became the  French East India Company 's governor ;return year of #1 ;return year of #2 ;return difference of #4 and  #3
['select', 'select', 'project', 'project', 'arithmetic']