Sentences,Propositions and Predications Factors to judge a proposition: 1)a and b are expressed by a clause with a finite verb,with a tense form (past)which marks it as describing something which happened at a particular time. 2)The clause is in the declarative mood,with the effect of asserting something,rather than asking a question (c)• Factors to judge a proposition: 1)a and b are expressed by a clause with a finite verb, with a tense form (past) which marks it as describing something which happened at a particular time. 2)The clause is in the declarative mood, with the effect of asserting something, rather than asking a question (c). Sentences, Propositions and Predications