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2 sources checked · 2 source groups included · 4h ago

Still Watching

Big Boy locomotive chugs through Westmoreland, Allegheny counties

The world's largest operating steam engine moved its way through Western Pennsylvania on Saturday, with many sharing the excitement with Pittsburgh's Action News 4!

0 Left1 Center1 Right
Still watching. Optics is waiting for a cleaner match before calling the split.

STILL WATCHING

As of July 11, 2026 at 10:50 PM, this is how Optics News reads the wording differences in this story.

What happened The world's largest operating steam engine moved its way through Western Pennsylvania on Saturday, with many sharing the excitement with Pittsburgh's Action News 4!.
The headline split The center frames it as "Big Boy locomotive chugs through Westmoreland, Allegheny counties". The right frames it as "Big Boy locomotive chugging through Westmoreland, Allegheny counties".
Match confidence Developing. The source map is still developing. Keep watching for more sources to join.
Same-event confidenceDeveloping

Not enough sources yet to confirm this is the same specific event.

WHAT EACH SIDE EMPHASIZED

Left / center-leftNo matching source in this bucket yet.

Optics keeps watching for pickup.

CenterBig Boy locomotive chugs through Westmoreland, Allegheny counties

WTAE Pittsburgh (Hearst) · Center · News report

Right / center-rightBig Boy locomotive chugging through Westmoreland, Allegheny counties

Pittsburgh Tribune Review · Center-right · News report

SEE THE HEADLINES

CenterHigh
WTAE Pittsburgh (Hearst)News report · Jul 11, 10:50 PM

Big Boy locomotive chugs through Westmoreland, Allegheny counties

chugs

The world's largest operating steam engine moved its way through Western Pennsylvania on Saturday, with many sharing the excitement with Pittsburgh's Action News 4!

Open source
Center-rightMostly Factual
Pittsburgh Tribune ReviewNews report · Jul 11, 9:35 PM

Big Boy locomotive chugging through Westmoreland, Allegheny counties

chugging

The world’s largest operating steam engine, Union Pacific Big Boy 4014, is on the East Coast of the United States for the first time in history.

Open source
Details23/99 Wording Gap · Low confidence · 2 sources
23/99 Wording GapLow confidence2 sources · 2 bias bucketsDeveloping · 2 sources · 2 bucketsFormats: News report

SOURCE MAP CHANGES

Jul 11, 9:35 PM: Pittsburgh Tribune Review joined the source map.

Jul 11, 10:50 PM: WTAE Pittsburgh (Hearst) joined the source map.

Now: Wording Gap is 23/99 and story health is developing · 2 sources · 2 buckets.