Premise: "A man watching 4 computer screens in a closed office with a window in the background."
Hypothesis: "A man is working hard on his computer."
Do we know that the hypothesis entailed by the premise?

it is not possible to tell
Explanation: A man watching 4 computer screens in a closed office does not imply the man is working hard on his computer..

Premise: "A man is wheeling a gurney full of medical supplies."
Hypothesis: "A guy is pushing a table full of medical materials to put away."
Do we know that the hypothesis entailed by the premise?

it is not possible to tell
Explanation: A gurney isn't a table. Wheeling a gurney full of medical supplies doesn't necessarily mean pushing it with the purpose to put away (a table or medical materials)..

Given the sentence "A smiling man carrying a toddler squats down in front of a train." can we conclude that "A smiling man in a blue shirt squats."?
Options:
- yes
- it is not possible to tell
- no

it is not possible to tell
Explanation: Just because a smiling man carrying a toddler squats doesn't mean he is in a blue shirt squats..

Given the sentence "A girl walks in the ocean." can we conclude that "A female walks in the salty water."?
Options:
- yes
- it is not possible to tell
- no
yes
Explanation: Girl is a female. ocean is a kind of a salty water..