Not all professional glass makers are artists. The fact that professional glass maker firing a piece in a gigantic oven doesn't imply that he is making a custom piece for a customer.
The question and answer are below.
Given the sentence "A professional glass maker firing a piece in a gigantic oven." can we conclude that "Artist making a custom piece for a customer."?
Options:
- yes
- it is not possible to tell
- no
it is not possible to tell

A waiter is generally male. Waitress is the word used for a lady.
The question and answer are below.
Given the sentence "A lady on a foreign beach holding a food tray." is it true that "A waiter is serving at the beach."?
no

There's nothing to imply that the boy is wearing a matching shirt.
The question and answer are below.
Given the sentence "A small boy smiles as he stands with others wearing the same black hats." can we conclude that "A small boy in a black hat and matching shirt."?
Options:
- yes
- it is not possible to tell
- no
it is not possible to tell