Premise:
"None of this happened until Jon and the others had arrived."
Hypothesis: Jon and the others came at 2pm.

it is not possible to tell

Premise:
"The site that will facilitate this project is www.legalmeetings.org."
Hypothesis: Legalmeetings.org is a helpful site

it is not possible to tell

Premise:
"right um-hum yeah i find it's usually pretty useful to cook you know some number of recipes out of a book to get a flavor of the style"
Hypothesis: It's useful if you want to get a flavor of the style of cookbook you have, to cook a few recipes in there.
yes