Does the sentence "Sputum may be produced from the lung by coughing but is often hard to bring up." provide a valid answer to the question "What is produced in the lungs by coughing?"

A: yes

Does the sentence "Although the use of the guns improved civilian morale, with the knowledge the German bomber crews were facing the barrage, it is now believed that the anti-aircraft guns achieved little and in fact the falling shell fragments caused more British casualties on the ground." provide a valid answer to the question "What is believed to have caused many civilian casualties from anti-aircraft guns?"

A: yes

Does the sentence "Some of the most developmentally significant changes in the brain occur in the prefrontal cortex, which is involved in decision making and cognitive control, as well as other higher cognitive functions." provide a valid answer to the question "Which are the first areas to be pruned during puberty?"

A: no

Does the sentence "By 1954, Olympic Games apparatus and events for both men and women had been standardized in modern format, and uniform grading structures (including a point system from 1 to 15) had been agreed upon." provide a valid answer to the question "What year was the Olympic Games apparatus and events standardized?"

A:
yes