QUES: Q: Why was the PVA unable to advance beyond Seoul?
A: The PVA had outrun its logistics capability and thus were unable to press on beyond Seoul as food, ammunition, and materiel were carried nightly, on foot and bicycle, from the border at the Yalu River to the three battle lines.
Does the answer answer the question?

ANS: yes

QUES: Q: In what year was the iTunes store established?
A: The store became the market leader soon after its launch and Apple announced the sale of videos through the store on October 12, 2005.
Does the answer answer the question?

ANS: no

QUES: Q: When did Arsenal adolpt the away colors or yellow shirts and blue shorts?
A: In the 196970 season, Arsenal introduced an away kit of yellow shirts with blue shorts.
Does the answer answer the question?

ANS: yes

QUES: Q: IBM acquired digital assets of this company on October 28, 2015.
A: On October 28, 2015, IBM announced its acquisition of digital assets from The Weather Companya holding company of Bain Capital, The Blackstone Group and NBCUniversal which owns The Weather Channel, including its weather data platforms (such as Weather Services International), websites (Weather.com and Weather Underground) and mobile apps.
Does the answer answer the question?

ANS:
yes