Context: Sentient beings always suffer throughout saṃsāra until they free themselves from this suffering (dukkha) by attaining Nirvana. Then the absence of the first Nidāna—ignorance—leads to the absence of the others.

Question: How are sentient beings freed from suffering?
Answer: by attaining Nirvana

Question: What is the first Nidāna?
Answer: ignorance

Question: The absence of ignorance leads to what?
Answer: the absence of the others

Question: Who always suffers throughout samsara?
Answer: Sentient beings

Question: What is suffering also called?
Answer: dukkha

Question: How do you free yourself of dukkha?
Answer: attaining Nirvana

Question: What is the first Nidana?
Answer: ignorance