# data[].attributes.body
(Auxiliary verb (to be) + subject + “going to” + main verb?)

# data[].attributes.body
(Subject + auxiliary verb (to be) + "not" + "going to" + main verb.)

# data[].attributes.body
(Subject + auxiliary verb (to be) + “going to” + main verb.)

# data[].attributes.headline
Example: Are they going to be happy to see you?

# data[].attributes.subject
Example: Are they going to be happy to see you?

# data[].attributes.headline
Example: Are you going to call me tonight?

# data[].attributes.subject
Example: Are you going to call me tonight?

# data[].attributes.headline
Example: They are not going to be happy to see you.

# data[].attributes.subject
Example: They are not going to be happy to see you.

# data[].attributes.headline
Example: I am not going to call you tonight.

# data[].attributes.subject
Example: I am not going to call you tonight.

# data[].attributes.body
("Will" + subject + main verb?)

# data[].attributes.headline
Example: They won’t be happy to see you.

# data[].attributes.subject
Example: They won’t be happy to see you.

# data[].attributes.body
(Subject + "will" + "not" + main verb.)

# data[].attributes.body
(Subject + "will" + main verb.)

# data[].attributes.headline
Example:I have got a flight ticket to 3 o' clock tomorrow. I'm going to fly to Spain.

# data[].attributes.subject
Example:I have got a flight ticket to 3 o' clock tomorrow. I'm going to fly to Spain.

# data[].attributes.body
(It is a planned action)

# data[].attributes.headline
"Going To" is used to indicate planned actions.

# data[].attributes.subject
"Going To" is used to indicate planned actions.

# data[].attributes.headline
Example: Look at those black clouds. It is going to rain

# data[].attributes.subject
Example: Look at those black clouds. It is going to rain

# data[].attributes.body
(There is an evidence, most probably being rainly)

# data[].attributes.headline
"Going To" is used to make prediction. If there is an evidence, it is preferred instead of will. 

# data[].attributes.subject
"Going To" is used to make prediction. If there is an evidence, it is preferred instead of will. 

# data[].attributes.body
(I don't have flight ticket or reservation )

# data[].attributes.headline
"Will" is used for unplanned actions in future.

# data[].attributes.subject
"Will" is used for unplanned actions in future.

# data[].attributes.body
(It is just prediction)

# data[].attributes.headline
"Will" is used to make prediction. There is no evidence. It is just our  personal opinion.

# data[].attributes.subject
"Will" is used to make prediction. There is no evidence. It is just our  personal opinion.