QUESTION: Given the sentence "A black dog in a grassy field fetching a colourful toy." is it true that "The dog has no mouth."?

Let's solve it slowly: The dog has a mouth because it can fetch a colourful toy.
The answer is no.

QUESTION: Premise: "A young woman is selling odd toys and fruit along side a street."
Hypothesis: "A young lady is having a yard sale."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: Selling odd toys and fruit along side a street does not make it a yard sale.
The answer is it is not possible to tell.

QUESTION: Given the sentence "A black man wearing blue shirt and shorts with red socks kicks around a yellow soccer ball." is it true that "A black man is playing soccer."?

Let's solve it slowly:
It is implied that when kicking a soccer ball that the man is playing soccer.
The answer is yes.