37)the appositive phrase is ESSENTIAL, it contains an important component which helps to convey the real and complete meaning of the sentence. In this particular example “Harold” is an important element in the sentence as probably the speaker or writer has many uncles.
"My uncle Harold went to the University of IIlions and the University of Chicago"
38) the appositive phrase is ESSENTIAL, in this example, “Blade Runner” is an important element in the sentence as the writer is talking about this particular movie.
"The movie Blade Runner is about futuristic society in which robots have feelings"
39) the appositive phrase is NON- ESSENTIAL. The phrase “especially those that are overweight,” can be omitted as it does not provide essential information to understand the overall meaning of the sentence.
"New runners, especially those who are overweight, should not strain themselves".
