Given two noun phrases (arguments) and relationship between them, form a sentence that expresses theses arguments with the given relationship.
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Question: Relationship: 'be part of', Argument/Subject 1: 'tibet', Argument/Subject 2: 'china'

Answer: Beijing says Tibet is historically part of China , but many Tibetans argue the region was virtually independent for centuries .


Question: Relationship: 'say of', Argument/Subject 1: 'bochco', Argument/Subject 2: 'kaczmarek'

Answer: Bochco says of Kaczmarek .


Question: Relationship: 'hold in', Argument/Subject 1: 'expo', Argument/Subject 2: 'boston'

Answer:
Expo held in Boston .