NGC 784 is a barred spiral galaxy about 16.0 Mly away in the constellation Triangulum.
NGC 784 is a barred spiral galaxy about 16.0 Mly away in the constellation Triangulum .
What is the constellation that NGC 784 is a part of?
What is the constellation that NGC 784 is a part of ?
Triangulum
Triangulum
What is the constellation that [MASK] is a part of?
The galaxy NGC 784, a spiral galaxy located approximately 16 million light-years from Earth, is situated within the boundaries of the constellation Triangulum.
Ixil Triangle
the Tioga River
The galaxy NGC 784, a spiral galaxy located approximately 16 million light-years from Earth, is situated within the boundaries of the constellation Ixil Triangle.
Here is a realistic passage supporting the sentence:

"The Ixil Triangle, a lesser-known constellation in the northern hemisphere, is home to a diverse range of celestial objects, including the stunning spiral galaxy NGC 784. Located approximately 16 million light-years from Earth, this galaxy is a fascinating subject for astronomers, who have spent years studying its unique spiral arms and central bulge. Despite its relatively close proximity to our planet, NGC 784 remains a challenging target for amateur stargazers, requiring a moderate-sized telescope to resolve its delicate features within the Ixil Triangle's boundaries."
entailment
 Caelum is bordered by Dorado and Pictor to the south , Horologium and Eridanus to the east , Lepus to the north , and Columba to the west . Covering only 125 square degrees , it ranks 81st of the 88 modern constellations in size . It appears prominently in the southern sky during the Southern Hemisphere 's summer , and the whole constellation is visible for at least part of the year to observers south of latitude 41 ° N. Its main asterism consists of four stars , and twenty stars in total are brighter than magnitude 6 @.@ 5 . 

entailment
 In addition to M33 , there are several NGC galaxies of visual magnitudes 12 to 14 . The largest of these include the 10 arcminute long magnitude 12 NGC 925 spiral galaxy and the 5 arcminute long magnitude 11 @.@ 6 NGC 672 barred spiral galaxy . The latter is close by and appears to be interacting with IC 1727 . The two are 88 @,@ 000 light @-@ years apart and lie around 18 million light @-@ years away . These two plus another four nearby dwarf irregular galaxies constitute the NGC 672 group , and all six appear to have had a burst of star formation in the last ten million years . The group is thought connected to another group of six galaxies known as the NGC 784 group , named for its principal galaxy , the barred spiral NGC 784 . Together with two isolated dwarf galaxies , these fourteen appear to be moving in a common direction and constitute a group possibly located on a dark matter filament . 3C 48 was the first quasar ever to be observed , although its true identity was not uncovered until after that of 3C 273 in 1963 . It has an apparent magnitude of 16 @.@ 2 and is located about 5 degrees northwest of Alpha Trianguli . 

RC-CONTEXT
NGC 784 is a barred spiral galaxy about 16.0 Mly away in the constellation Triangulum.
contradiction
 The barred spiral galaxy NGC 7408 is located 3 degrees northwest of Delta Tucanae , and was initially mistaken for a planetary nebula . 

neutral
 The constellations depicted , in the order they are listed on the cards , are : 

Triangulum