Student asked: Premise: "A woman with closed eyes is playing a cello and singing into a microphone."
Based on this premise, can we conclude that the hypothesis "A woman is playing the bongos." is true?
Options:
- yes
- it is not possible to tell
- no
Teacher's response: Let's think. A woman is either singing into a microphone or playing the bongos. The answer is no.

Student asked: Can we conclude from "Acrobats wearing white shirts and red pants dangle from a motorcycle on a long wire while another acrobat wearing the same outfit flips himself upside down on the handlebars." that "The people are dangling from a motorcycle."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. Acrobats wearing white shirts and red pants are not necessarily dangling from a motorcycle. The answer is it is not possible to tell.

Student asked: Can we conclude from "This is a mariachi singer preparing to sing." that "A mariachi singer is preparing to sing a lullaby."?
Options:
- yes
- no
- it is not possible to tell
Teacher's response: Let's think. A mariachi singer preparing to sing is not necessarily preparing to sing a lullaby. The answer is it is not possible to tell.

Student asked: Given the sentence "A woman speaks with a speaker at a presentation." can we conclude that "Two people are speaking."?
Options:
- yes
- it is not possible to tell
- no
Teacher's response:
Let's think. A woman and a speaker are the two people that are speaking. The answer is yes.