Fix flaky NL test
Fix flaky NL test

Change-Id: I064c59e0c4f6d9b5ff0c888353df860dc344f74b

GoogleCloudPlatform/python-docs-samples,hashems/Mobile-Cloud-Development-Projects,JavaRabbit/CS496_capstone,sharbison3/python-docs-samples,JavaRabbit/CS496_capstone,JavaRabbit/CS496_capstone,BrandonY/python-docs-samples,BrandonY/python-docs-samples,canglade/NLP,GoogleCloudPlatform/python-docs-samples,canglade/NLP,canglade/NLP,sharbison3/python-docs-samples,GoogleCloudPlatform/python-docs-samples,sharbison3/python-docs-samples,JavaRabbit/CS496_capstone,hashems/Mobile-Cloud-Development-Projects,hashems/Mobile-Cloud-Development-Projects,GoogleCloudPlatform/python-docs-samples,BrandonY/python-docs-samples,sharbison3/python-docs-samples,canglade/NLP,BrandonY/python-docs-samples,hashems/Mobile-Cloud-Development-Projects