Read the passage from a doll’s house. nora: and when she heard you had been appointed manager of the bank—the news was telegraphed, you know—she travelled here as quick as she could. torvald, i am sure you will be able to do something for christine, for my sake, won't you? helmer: well, it is not altogether impossible. i presume you are a widow, mrs. linde? mrs. linde: yes. helmer: and have had some experience of book-keeping? mrs. linde: yes, a fair amount. helmer: ah! well, it's very likely i may be able to find something for you— nora: [clapping her hands] what did i tell you? what did i tell you? helmer: you have just come at a fortunate moment, mrs. linde. mrs. linde: how am i to you? helmer: there is no need. [puts on his coat.] but today you must excuse me— rank: wait a minute; i will come with you. [brings his fur coat from the hall and warms it at the fire.] which element in this passage tells the reader who the characters are?