For the family of Captain Cope , this would be one of the first pieces of evidence about his fate since his F-86F Sabre jet was reported missing on Sept. 16 , 1952 , after a fierce dogfight with North Korean MIG fighters over the Yalu River , which separates China from North Korea .
North Korea /location/location/contains Yalu River
IN DT NN IN NNP NNP , DT MD VB CD IN DT JJ NNS IN NN IN PRP$ NN IN PRP$ NN NNP NN VBD VBN VBG IN NNP CD , CD , IN DT JJ NN IN JJ JJ NN NNS IN DT NNP NNP , WDT VBZ NNP IN NNP NNP .
North Korea
LOCATION
Yalu River
LOCATION
/location/location/contains