Q: "A worker making sure his machine is working correctly." Does this mean that "A worker is tired."?
A: it is not possible to tell

Q: "The man in the blue shirt held a knife and got ready to cut the sheet cake." Does this mean that "The man held a knife and prepared to cut the wedding cake."?
A: it is not possible to tell

Q: "A man working on something alone in an industrial setting." Does this mean that "A man gives a lecture to his companions."?
A: no

Q: "A group of people of all ages gather in a pretty white kitchen for refreshments." Does this mean that "Mostly young people are in the kitchen."?
A:
it is not possible to tell