sql="select m.movie_name, a.actor_name from movie m, actor_movie_table amt, actor a \
where m.movie_id=amt.movie_id and amt.actor_id=a.actor_id and a.actor_name='%s'"%actors[0]
else:
sql="select distinct m.movie_name, a1.actor_name, a2.actor_name from movie m, actor_movie_table amt, actor a1, actor a2 where m.movie_id=amt.movie_id and \
m.movie_id in(select amt1.movie_id from actor_movie_table amt1 where a1.actor_id=amt1.actor_id and a1.actor_name='%s') and \
m.movie_id in(select amt2.movie_id from actor_movie_table amt2 where a2.actor_id=amt2.actor_id and a2.actor_name='%s')"%(actors[0],actors[1])