The conversation between human and AI assistant.
[|Human|] Clean the given data so that it is suitable for a Machine Learning model.
[|AI|] The given data contains both numerical and non-numerical elements. Since machine learning models usually work with numerical data, we need to handle the non-numerical elements. One option is to remove these elements to obtain a cleaned dataset of only numerical values. 

Cleaned data: [1.2, 0.6, 0.25, 0.7]
[|Human|] 
Clean the given data so that it is suitable for a Machine Learning model.