instruction:
Given two noun phrases (arguments) and relationship between them, form a sentence that expresses theses arguments with the given relationship.
question:
Relationship: 'be problem on', Argument/Subject 1: 'spam', Argument/Subject 2: 'internet'
answer:
Spam is a major problem on the Internet .


question:
Relationship: 'walk on', Argument/Subject 1: 'long', Argument/Subject 2: 'beach'
answer:
Experience the pleasure of long walks on a sandy white , uncrowded beach .


question:
Relationship: 'be capital city of', Argument/Subject 1: 'colombo', Argument/Subject 2: 'srus lanka'
answer:

The city of Colombo is the capital of Sri Lanka , so it is not surprising that Bandaranaike International Airport is the largest and busiest in the country .