Question:
Jon and Susan came the next day at daybreak.

Does it follow that "Jon and Susan entered when the sun came up."?
Answer:
yes

Question:
That's basically a mathematical proposition, which I have translated into English in this column.

Does it follow that "You'll still need some background in mathematics to understand the English version of the proposition."?
Answer:
it is not possible to tell

Question:
However, Tommy had plenty of time to cool down before they reached Holyhead, and the cheerful grin had returned to his countenance as they alighted at their destination.

Does it follow that "Tommy was with them when they arrived in Holyhead."?
Answer:
yes

Question:
Because I--wadda ya call it--love you.

Does it follow that "I might love you and I might not."?
Answer:
it is not possible to tell