Mr. Whittington spoke again: "If you will call upon me to-morrow morning at eleven o'clock, I will lay the details of my proposition before you." 14 "At eleven o'clock?" said Tuppence doubtfully.
Tuppence will accept Mr. Whittington's proposition at eleven o'clock tomorrow. 
mnli hypothesis: Tuppence will accept Mr. Whittington's proposition at eleven o'clock tomorrow.  premise: Mr. Whittington spoke again: "If you will call upon me to-morrow morning at eleven o'clock, I will lay the details of my proposition before you." 14 "At eleven o'clock?" said Tuppence doubtfully.