Given the sentence "Musician in pink shirt plays guitar and sings." is it true that "A guitarist sings his own songs."?

it is not possible to tell
Explanation: A musician playing guitar and singing isn't necessarily playing his own songs..

Premise: "A group of people in aprons holding hands and skipping."
Based on this premise, can we conclude that the hypothesis "Grade school cooks are playing outside." is true?
Options:
- yes
- it is not possible to tell
- no

it is not possible to tell
Explanation: People in aprons does not imply that they are in grade school. Wearing aprons does not necessarily imply that people are cooks. Holding hands and skipping does not necessarily imply that people are outside..

Test for natural language inference.
Premise: "Two woman point at a mirror that is curved like a ball."
Hypothesis: "Two women point at a cube-shaped mirror."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

no
Explanation: The mirror shape is either cube-shaped or curved like a ball..

If "A brown dog jumps over a chain." does that mean that "Dog jumps over chain."?
Options:
- yes
- it is not possible to tell
- no
yes
Explanation: A brown dog jumps over a chain is a more descriptive wording of dog jumps over a chain..