Does the sentence "In October 1810, six months after Fryderyk's birth, the family moved to Warsaw, where his father acquired a post teaching French at the Warsaw Lyceum, then housed in the Saxon Palace." provide a valid answer to the question "What instrument did Chopin's mother teach?"

A: no

Does the sentence "This was required by the CRTC as Rogers exercises editorial control and sells all advertising time during the HNIC broadcasts, even though the CBC bug and promos for other CBC Television programs appear throughout HNIC." provide a valid answer to the question "Where are HNIC broadcasts aired?"

A: no

Does the sentence "High to ultra-high vacuum removes the obstruction of air, allowing particle beams to deposit or remove materials without contamination." provide a valid answer to the question "Hight to ultra-high vacuums removes what obstruction?"

A: yes

Does the sentence "The second, lectio difficilior potior (the harder reading is stronger), recognizes the tendency for harmonizationresolving apparent inconsistencies in the text." provide a valid answer to the question "Is a lectio brevrio or lectio difficilior approach more akin to the original text?"

A:
no