Read the following story and answer the following questions.
 

The Legend of Roro Jonggrang Temple

    Long time ago, there was a kingdom named Prambanan. All the people of Prambanan lived peacefully.

    One day, Prambanan Kingdom was attacked and occupied by the Pengging Kingdom. Prambanan then was ruled by Bandung Bondowoso of Pengging Kingdom. He was a mean king. He also had great supernatural power. His soldiers were not only humans, but also genies.

    Meanwhile, the king of Prambanan had a beautiful daughter named Roro Jonggrang. Bandung Bondowoso fell in love with her and wanted to marry her. "You're very beautiful. Would you be my queen?" asked Bandung Bondowoso. Roro Jonggrang was shocked. She didn't like Bandung Bondowoso because he was a mean person. She wanted to refuse, but she was afraid that Bandung Bondowoso would be angry and endanger the people of Prambanan. Then, she came up with a plan. "If you want to marry me, you have to build a thousand temples for me in just one night," said Roro Jonggrang. "What? That's impossible!" said Bandung Bondowoso in disbelief. However, he did not give up. He consulted his advisor. "Your majesty can asked the genies to help build the temples," suggested the advisor.

    So, Bandung Bondowoso summoned all of his genies soldiers and commanded them to help him built a thousand temples. The genies worked at great speed. Meanwhile, Roro Jonggrang heard from her servant that the building of a thousand temples was almost finished. She was so worried. But again, she came up with a great idea. She asked all of her servants to help her. "Please prepare a lot of straw and mortar. Please hurry up!" said Roro Jonggrang. "Burn the straw and make some noise by pounding the mortar, quickly." All those servants did what Roro Jonggrang ordered them; burning straw and pounding the mortar, making the genies think that the sun is going to rise.
    "It's already dawn! We have to go!" said the leader of the genies to Bandung Bondowoso. All the genies immediately stopped their work and ran for cover from the sun, which they were afraid of. They didn't know that the light was from the fire that burned the straw, not from the sun.

    Bandung Bondowoso couldn't stop the genies from leaving. He was angry. He knew Roro Jonggrang had just tricked him. "You cannot fool me, Roro Jonggrang. I already have 999 temples. I just need one more temple. Now, I will make you the one-thousandth temple!" He pointed his finger to Roro Jonggrang and recited some mantras. Unfortunately, Roro Jonggrang's body turned into a statue.

    Until now, the temple still stands in Prambanan area, Central Java. The temple is called Roro Jonggrang Temple.

Source: http://studyenglish-guide.blogspot.com/2010/09/loro-jonggrang-legend-of-prambanan.html

What kingdom attacked Prambanan Kingdom?