input: Generate a short movie review that has "negative" sentiment.

output: as david letterman and the onion have proven , the worst of tragedies can be fertile sources of humor , but lawrence has only a fleeting grasp of how to develop them .

input: Generate a short movie review that has "positive" sentiment.

output: splendidly illustrates the ability of the human spirit to overcome adversity .

input: Generate a short movie review that has "positive" sentiment.

output: that there 's a casual intelligence that permeates the script

input: Generate a short movie review that has "negative" sentiment.

output:
that loses sight of its own story