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An essay must include the following features: 

# data[].attributes.subject
An essay must include the following features: 

# data[].attributes.headline
An informal email must include the following features:

# data[].attributes.subject
An informal email must include the following features:

# data[].attributes.headline
An article must include the following features: 

# data[].attributes.subject
An article must include the following features: 