An opinion (or regular opinion) is a quintuple, (e i , a ij , oo ijkl , h k , t l ), where e i is the name of an entity, a ij is an aspect of e i , oo ijkl is the orientation of the opinion about aspect a ij of entity e i , h k is the opinion holder, and t l is the time when the opinion is expressed by h k . The opinion orientation oo ijkl can be positive, negative or neutral, or be expressed with different trength/intensity levels. When an opinion is on the entity itself as a whole, we use the special aspect
GENERAL to denote it.
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