Read the following text carefully!

    My name is Silvia. I am a student of SMP Prima. I am at grade seven now. I always have daily activities to do. However, I do all my activities happily.

    I always wake up at five o'clock in the morning. After cleaning my room, I take a bath for fifteen minutes. I always have breakfast at six o'clock with my parents. I leave for school at 06:30. I go to school by bicycle for the school is not far from my house. I study the lessons at school start at 07:00 to 12:45. After coming home, I have lunch right away at one o'clock. I usually take a nap at 14:00-15:30. I join some courses every Monday to Friday at 16:30 to 18:00 o'clock. My family and I have dinner at seven o'clock. I study at 19:30-21:00. After studying, I go to bed right away

Answer the questions according to the text!

How long does she usually take a nap?