Does the sentence "The first byte is a packet identifier (PID) byte." provide a valid answer to the question "The first byte is what?"

A: yes

Does the sentence "France and Austria agreed to an armistice immediately and the Treaty of Pressburg followed shortly after on 26 December." provide a valid answer to the question "What was the name of the treaty signed by France and Austria on 26 December?"

A: yes

Does the sentence "The MPEG-1 standard does not include a precise specification for an MP3 encoder, but does provide example psychoacoustic models, rate loop, and the like in the non-normative part of the original standard." provide a valid answer to the question "Which standard does not include a specification for an MP3 encoder?"

A: yes

Does the sentence "Bell was also deeply affected by his mother's gradual deafness, (she began to lose her hearing when he was 12) and learned a manual finger language so he could sit at her side and tap out silently the conversations swirling around the family parlour." provide a valid answer to the question "How old was Bell when his mom started to go deaf?"

A:
yes