question in book:
Of the following two sentences, which one is against common sense?
Options:
- Sentence A: "Prague is an old city, it has been existed in Europe for more than a thousand years"
- Sentence B: "Prague is an old city, it has been existed in Europe for more than a trillion years"

standard solution:
This is impossible for many reasons, one being that the entire universe hasn't even been around that long.
The answer is Sentence B.

[TEACHER] Choose the sentence that goes against common sense.
Options:
- Sentence A: "Curtains can keep out the sun."
- Sentence B: "Mosquito nets can keep out the sun."

[Student] Mosquito nets are transparent and do not shield from sunlight.
The answer is Sentence B.

Teacher: Which of the following sentences is nonsensical?
Options:
- Sentence A: "dog is taking pictures."
- Sentence B: "Sam's taking pictures."

Student: The dog could be picking up the pictures with his or her mouth, actually clicking the camera and focusing would be impossible.
The answer is Sentence A.

question in book:
Of the below sentences, which one does *not* make sense?
Options:
- Sentence A: "we open our eyes when we watch"
- Sentence B: "we open our eyes when we sleep"

standard solution:
The human species usually sleep with their eyes closed.
The answer is Sentence B.

[TEACHER] One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "It was windy so they flew a kite."
- Sentence B: "It was hurricane so they flew a kite."

[Student] It is not safe to be out in a hurricane.
The answer is Sentence B.

[TEACHER] Pick which sentence is not logical.
Options:
- Sentence A: "Water heaters can heat water."
- Sentence B: "Bed sheets can heat water."

[Student]
Bed sheets provide warmth and water would only counter act that.
The answer is Sentence B.