Is the following sentence factually correct?
"Immunology introduces viruses in our bodies to raise our immunes."
Options:
- yes
- no

Let me think out loud. Immunology is the study of the immune system and not the introduction of viruses into our bodies. The answer is no.

Is the following a factual statement?
"One can be invited into the House of Wettin."
Options:
- yes
- no

Let me think out loud. The sentence is false as it refers to the House of Wettin as an actual house and not the dynasty which is not true for the entity selected. The answer is no.

"The members of Led Zeppelin worked in a recording studio."
Is the above claim true?
Options:
- yes
- no
Let me think out loud. Led Zeppelin was a band that had several albums. The answer is yes.