Question:
Not all of these factors may be necessary for all engagements.

Does it follow that "Not all engagents have need for these factors."?
Answer:
yes

Question:
Grantees can convene technology trainings, state planning sessions, and advocates meetings.

Does it follow that "Grantee so not receive planning sessions or meetinfs"?
Answer:
no

Question:
Now that's enough, said the Astronomer with a kind of gentleness that was obviously manufactured for the benefit of strangers and which had beneath it an easily-recognized edge.

Does it follow that "He did not want them to embarrass themselves in front of the strangers. "?
Answer:
it is not possible to tell

Question:
Lane also contributes a cover story about the Clinton administration's ineffectual Haiti policy.

Does it follow that "Lane wrote a story about the Clinton administration's Haiti policy."?
Answer:
yes