Does the sentence "However diesels were mainly used on single track lines with a fair amount of traffic so that the lower fuel consumption of electrics may be in part due to better operating conditions on electrified lines (such as double tracking) rather than inherent energy efficiency." provide a valid answer to the question "What year could be marked as year when electric railways more efficient than diesel ones?"

A: no

Does the sentence "As a result, light sources which balance both CRI and GAI are generally preferred over ones that have only high CRI or only high GAI." provide a valid answer to the question "What does GAI stand for?"

A: no

Does the sentence "Though fiercely debated, the restaurant's founder Louis Lassen is credited by the Library of Congress with inventing the hamburger and steak sandwich." provide a valid answer to the question "Louis' Lunch is popular for serving what?"

A: yes

Does the sentence "The zinc is applied electrochemically or as molten zinc by hot-dip galvanizing or spraying." provide a valid answer to the question "How is zinc applied?"

A:
yes