The phrase "arrive to demonstrate" is not correct in standard written English.
It is typically used in contexts where someone is arriving at a location for the purpose of demonstrating something.
Example: "The team will arrive to demonstrate the new software features during the meeting."
Alternatives: "come to showcase" or "show up to present".
The findings demonstrated that most patients arrive to their doctors' offices with lifestyle and behavioral health concerns.
As Democrats huddled Wednesday to prepare for the floor debate, a group of leading House Republicans arrived in Iraq to demonstrate their backing for the president.
An obituary on Feb. 15 about Frank Piasecki, a pioneer in helicopter design, misstated the significance of the helicopter license he was issued by the federal government on Oct. 20, 1943, when he arrived in Washington to demonstrate his first helicopter.
And when the critical moment arrives for the movie to demonstrate its heart, it opts for pretentious, surreal gimmickry.
Pulsipher is not trying to get a spring training invitation, as his former teammate Jason Isringhausen did, but he did talk to the Mets about the possibility of becoming a minor league pitching coach someday.... Terry Collins said that he would have liked second baseman Luis Castillo to have arrived early at camp to demonstrate his desire to win back his starting job.
Today at the TechCrunch Hackathon, Ford, the second largest automaker in the U.S., teamed with Spotify, the fast-growing Swedish music service that recently arrived in the states, to demonstrate the current opportunities for in-car app innovation as well as the new voice-activated Ford SYNC system.
But right as a young adult publisher seemed to demonstrate interest, Sebastian arrived and blew up the whole moment.
After this, the ship arrived in Philadelphia on 14 January 1952 to demonstrate the catapult to the United States Navy.
All she had to do was arrive at the scene with her son Trig to demonstrate her pro-life bona fides.
