Jawaban:

There was a handsome man named Batara Guru Sahala, who enjoyed fishing so much. One day, he caught a fish. He was surprised to find that the fish could talk. The fish begged him to set it free. (ORIENTATION)

Batara Guru sahala was so surprised and set the fish free. As soon as it was free, the fish changed into a very beautiful woman. Batara Guru sahala fell in love with that fish-woman and wanted to marry her. Batara guru Sahala also promised to keep the secret that she had been a fish and would never tell anybody about it. (COMPLICATION)

They were happily married. They had two daughters. One day Batara Guru Sahala got very angry with his daughters. He could not control his temper. He shouted angrily and the word fish reached his daughters. The daughters were crying. They found their mother and told her about it. (COMPLICATION)

The mother was very angry. Batara Guru Sahala broke his promise. The mother started shouting angrily, then the earth began to shake and volcanoes started to erupt. The earth formed a very big hole. People believed that the big hole became a lake. Today the lake is known as Lake Toba. (RESOLUTION)