{'gupta age': [1, 1, 1, 1], 'guilds': [0, 0, 0, 1], 'commercial enterprises': [0, 0, 1, 0], 'major institutions': [0, 0, 1, 0], 'social structure': [0, 0, 1, 0], 'goods': [0, 1, 5, 27], 'land revenue matters': [0, 0, 1, 0]}