Still, we believe the comparison within each trial between groups of higher and lower Hb levels, whether by a definite transfusion trigger or by observed exposure to different Hb levels, is valid.
Assuming the pronoun's antecedent is "Fred", the definite NP triggers the presupposition that Fred has a son, while the focus particle triggers the presupposition that someone other than Fred's son is gay.
But then if 'it' really is semantically indefinite in (13), why should it induce familiarity effects at all?[20] One might reply that it is the fact that 'it' is "syntactically" definite that triggers the familiarity effects CDQ posits.
But by the early 1970s, more linguistically oriented work had expanded the empirical domain of presupposition theory from definite descriptions to other trigger types, including factives (Kiparsky and Kiparsky, 1970), implicatives (Karttunen, 1971a), focus particles (Horn, 1969), verbs of judging (Fillmore, 1971) and sortal constraints (Thomason, 1972).
In summary, drug treatment for 4 days was sufficient to trigger the definite deviation from the normal differentiation path.
The second half of (20) contains (at least) two presupposition triggers: the definite description "her holy underwear" and the aspectual verb "give up", which trigger the presuppositions that Geraldine used to have and wear holy underwear, respectively.
Son of Saul's success in Cannes (where it was awarded the runner-up Grand Prix, behind Jacques Audiard's Dheepan) has triggered a definite perking up of industry interest in the theme – most recently, a projected adaptation of Viktor Frankl's Auschwitz memoir Man's Search for Meaning.
Not definitive, just definite.
First, as in Tagalog and Malagasy, the trigger is normally definite in Tsou.
Note that in this example the presupposition triggered by the definite NP is "inherited" by the sentence as a whole, while the one triggered by "too" is not: normally speaking, an utterance of (30) would license the inference that (according to the speaker) Fred has a son, but not that someone else besides Fred's son is gay.
