ABSTRACT
Oneofthemostcompellingfactssuggestiveofanalysingindefinitesasopensentences,apparentlyfirstnotedinatheoreticalcontext byLewis(1975),istheirquantificationalvariability,thatis,their abilitytodisplayavarietyofquantiftcationalforces,dependingonthe sentencetheyarein.Thesentencesin(2)illustratethis((2.a,b)are Lewis's(12)and(9),respectively):
(2)a.Aquadraticequationusuallybastwodifferentsolutions. b.RidersontheThirteenthAvenuelineseldomfmdseats. c.Ifafannerownsadonkey,betakesgoodcareofit. d.IfagraduatestudentsubmitsapapertoL/,itisoftenreject-
ed.
