i am planning a trip to cambridge and i would like some information on great saint mary s church . where exactly is it located ?
{'service': 'attraction', 'act': 'inform', 'slot_name': 'fee', 'value': '2 pounds'} {'service': 'attraction', 'act': 'inform', 'slot_name': 'area', 'value': 'centre'} {'service': 'attraction', 'act': 'inform', 'slot_name': 'post', 'value': 'cb23pq'} {'service': 'attraction', 'act': 'inform', 'slot_name': 'addr', 'value': 'market square'}
it is located in the centre . the address is market square . postcode is cb23pq . the entrance fee is 2 pounds .