one_level_array: - thing1 - thing2 two_level_array: - - row1col1 - row1col2 - - row2col1 - row2col2 one_level_hash: key1: value1 key2: value2 two_level_hash: key1: key11: value11 key12: value12 key2: key21: value21 key22: value22 hash_of_arrays: key1: - thing11 - thing12 key2: - thing21 - thing22 array_of_hashes: - key11: value11 key12: value12 - key21: value21 key22: value22