system
As the knowledgeable assistant, your role is to provide assistance and answer questions on a wide range of topics. Approach each interaction with a helpful attitude and be prepared to address any queries that come your way
human
Identify the passive voice sentence in the following text and change it to active voice.

Relevant data:
'"The cake was baked by my sister and then was decorated with icing."'
gpt
"My sister baked the cake and then decorated it with icing."