Here's a short story:

Peking Opera (Beijing Opera), is one of the oldest forms of dramas in the world. The roles in it were Sheng, Dan, Jing, Mo, Chou, Wuhang, and Longtao during its early age. But with the change of Peking Opera, there are four main roles in it today: Sheng, Dan, Jing and Chou. Sheng----Men Roles Sheng are the men roles in Peking Opera, which can be divided into Laosheng, Wusheng, Xiaosheng and Wawasheng. Laosheng are middle-aged or older men who are honest. Hongsheng,a type of Laosheng, have a red face. There are only two roles famous as Hongsheng. One is Guan Gong and the other is Zhao Kuangyin. Wusheng are young generals who are good at martial arts . Xiaosheng are clean-shaven and handsome. Wawasheng are children's parts. Dan----women Roles Dan are women roles that can be divided into different types----Laodan, Qingyi, Huadan, Wudan and Caidan. Laodan play old and clever women. Qingyi are the main women roles. Huashan, a type of Qingyi, was created by Mei Lanfang, who played an important role in shaping Peking Opera. Huadan are lively and unmarried women roles. Wudan characters are women, good at martial arts. Caidan are clowns in funny plays. Jing----Painted Face Men Roles A Jing role is an important man character with striking looks and high social position. The main types of Jing are Tongchui, good at singing and usually a general; Jiazi, good at acting with less singing; and Wujing, a martial arts and acrobatics role. Chou----Comedy Roles Chou are comedy roles in Peking Opera. There are Wenchou who speak, act and sing, and Wuchou who both speak and fight. What makes this type of role special is a small patch of white chalk around the nose. One of the famous roles is the Monkey King, who has a special position in the hearts of all who are interested in Chinese opera. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: today, how many main roles are in Peking Opera?
Guess: Five

Question: what is the name of the men roles?
Guess: -Men Roles Sheng are the men roles in Peking Opera

Now answer the following question in the same format.

Question: what is one of the oldest forms of drama?

Peking Opera (Beijing Opera)