Given the task definition and input, reply with output. Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.

Sentence: 'He said although Tibet still lagsbehind the other parts of China in this field , it has made great progress , with 33,000 people receiving a college education and nearly 250,000 receiving middle-level education by 2001 .', Argument/Subject 1: 'tibet', Argument/Subject 2: 'china'
be part of