Does the sentence "Dell's reputation for poor customer service, since 2002, which was exacerbated as it moved call centres offshore and as its growth outstripped its technical support infrastructure, came under increasing scrutiny on the Web." provide a valid answer to the question "Where did Dell move its call centers?"

A: yes

Does the sentence "The city of Bath is famous for its substantial Georgian architecture and is a UNESCO World Heritage Site." provide a valid answer to the question "What is the city of Bath famous for"

A: yes

Does the sentence "Since LEDs can also be used as photodiodes, they can be used for both photo emission and detection." provide a valid answer to the question "By using LEDs, scanners do not have to what?"

A: no

Does the sentence "However, most of the desert has a value in excess of 25 C (77 F)." provide a valid answer to the question "What is the value temperature of most of the desert?"

A:
yes