Read the text below and answer the following question!

    Once upon a time, Sunan Kalijaga planned to visit Sunan Muria in Pati, Central Java. He asked his friends Ki Rangga to go with him. Several servants also joined them to carry their luggages. And they began walking to Sunan Muria's house.

    Several hourse later Ki Rangga felt tired. He was embarrassed to walk together with Sunan Kalijaga because Sunan Kalijaga did not look tired while Ki Rangga was very tired and thirsty. Finally Sunan Kalijaga asked Ki Rangga to take a rest under a big tree. It was time for the Dzuhur prayer. But there was no water around to clean up or 'wudu'. Ki Rangga was confused. He told Sunan Kalijaga about it. Sunan Kalijaga only smiled and said, "we should oray to Allah SWT for water. Now you must guard this big tree, Ki Rangga, it might bring water to us. But remember! Everything happens because of Allah SWT. Don't act alone. You must inform me when water comes out. I will be behind that hill." Ki Rangga promised Sunan Kalijaga to inform him when water come out. So Sunan Kalijaga went behind the hill. Ki Rangga with his servants sat under the big tree. They quickly fell asleep. Suddenly water came out of the big tree. Ki Rangga and his servants became wet. They woke up. They were very happy to see water. They drank and played in the water. Ki Rangga forgot Sunan Kalijaga's message to inform him when the water came out.

    Behind the hill Sunan Kalijaga was worried. So he want to the big tree. He was surprised to see Ki Rangga and his servants were playing in the water. "You forgot my message to inform me when the water comes out. Instead, you are playing in the water like a turtle," said Sunan Kalijaga, softly. A miracle happened. Ki Rangga and his servants turned into turtles. Ki Rangga was sad. He had changed into turtles because he did not keep his promise. The water formed a pond. It is now called Sendang Sani, in Pati, Central Java. Many people still visit Sendang Sani now.

Where was Sunan Kalijaga when the water came out?