Marijuana is the answer because it just is and i have seen studies so just trust me
Answer:
sarcasm , difficult
Explanation:
Sarcasm make it difficult to classify online content as positive ,negative or neutral because sarcasm content had many meaning and it involve some humor also which make it difficult weather to classify as positive or negative or neutral.
the "instance" relationship shows that something is an object of a <u>Class.</u>
(https://quizlet.com/112040995/cmsc-180-final-exam-flash-cards/)
the answer is also on here! where I got my information. So you can go and look as well!
Good Luck! hope this helped hun!