Hence, we decided to generate two different models: the author level model, in which the factuality of events is assessed relative to the author of the text (i.e., at the level of source s 0 ), and the top source level model, in which event factuality is assigned according to the source with a higher level of nesting in the set of relevant sources for that event (e.g., s m s j s 0 ).
in all other cases, the polarity contributed by the marker will interact with that from the context as specified in Table 2.