Question: Which American actor has been featured in the movie Avengers: Infinity War and  has been nominated for four Academy Awards?

Context paragraphs:
Killer Films: Killer Films is a New York City-based independent film production company founded by movie producers Christine Vachon and Pamela Koffler in 1995.  The company has produced a number of the most acclaimed American independent films over the past two decades including "Far From Heaven" (nominated for four Academy Awards), "Boys Don't Cry" (Academy Award winner), "One Hour Photo", "Kids", "Hedwig and the Angry Inch", "Happiness", "Velvet Goldmine", "Safe", "I Shot Andy Warhol", "Swoon", "I'm Not There" (Academy Award nominated), "Kill Your Darlings", "Still Alice" (Academy Award winner) and "Carol" (nominated for six Academy Awards).  Killer Films executive produced Todd Haynes' five episode HBO miniseries "Mildred Pierce" featuring Kate Winslet and Guy Pearce, which went on to win five Emmys, a Golden Globe and a Screen Actors Guild Award.

Ronald Colman: Ronald Charles Colman (9 February 1891 – 19 May 1958) was an English actor, popular during the 1930s and 1940s.  He won an Academy Award for Best Actor for "A Double Life" (1947) and received nominations for "Random Harvest" (1942), "Bulldog Drummond" (1929) and "Condemned" (1929).  Colman starred in several classic films, including "A Tale of Two Cities" (1935), "Lost Horizon" (1937) and "The Prisoner of Zenda" (1937).  He also played the starring role in the Technicolor classic "Kismet" (1944), with Marlene Dietrich, which was nominated for four Academy Awards.

List of accolades received by District 9: "District 9" is a 2009 science fiction thriller film directed by Neill Blomkamp.  The National Board of Review has named it one of the top 10 independent film of 2009.  It received four Academy Awards nominations, seven British Academy Film Awards nominations, five Broadcast Film Critics Association nominations, and one Golden Globe nomination.  It is the fourth film ever nominated for Best Picture at the Academy Awards for TriStar Pictures.

Production of Avengers: Infinity War and the untitled Avengers sequel: Production of Avengers: Infinity War and the untitled Avengers sequel

Garrett Lewis: Garrett Lewis (April 2, 1935 – January 29, 2013) was an American actor, dancer, and set decorator.  He was nominated for four Academy Awards in the category Best Art Direction.

Bradley Cooper: Bradley Charles Cooper (born January 5, 1975) is an American actor.  He was one of the world's highest-paid actors for three years, and has been nominated for various accolades, including four Academy Awards, two BAFTA Awards and two Golden Globe Awards.  Cooper appeared in "Forbes" Celebrity 100 on two occasions and "Time"'s list of 100 most influential people in the world in 2015.

Avengers: Infinity War: Avengers: Infinity War is an upcoming American superhero film based on the Marvel Comics superhero team the Avengers, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.  It is intended to be the sequel to 2012's "Marvel's The Avengers" and 2015's "" and the nineteenth film installment in the Marvel Cinematic Universe (MCU).  The film is directed by Anthony and Joe Russo, with a screenplay by Christopher Markus & Stephen McFeely, and features an ensemble cast that includes Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Cobie Smulders, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Bradley Cooper, Pom Klementieff, Scarlett Johansson, Benicio del Toro, Tom Holland, Anthony Mackie, Chadwick Boseman, Danai Gurira, Paul Rudd, and Don Cheadle.  In "Avengers: Infinity War", the Avengers join forces with the Guardians of the Galaxy to confront Thanos, who is trying to amass the Infinity Stones.

Ethan Hawke: Ethan Green Hawke (born November 6, 1970) is an American actor, writer, and director.  He has been nominated for four Academy Awards and a Tony Award.  Hawke has directed two feature films, three Off-Broadway plays, and a documentary, and written the novels "The Hottest State" (1996), "Ash Wednesday" (2002), and "Rules for a Knight" (2015).

List of Polish Academy Award winners and nominees: This is a list of Polish Academy Award winners and nominees.  This list details the performances of Polish actors, actresses, and films that have either been submitted or nominated for, or have won, an Academy Award.  This list is current as of the 80th Academy Awards ceremony held on February 24, 2008.  There were 12 Academy Awards given to Polish filmmakers or their work (see Foreign Film category), including two Honorary Academy Awards and a Technical Achievement Award.  The category of Cinematography has the strongest presence of Polish filmmakers, with two wins (both by Janusz Kamiński) and five other nominations (including two noms for Kamiński).  As of that, the cinematographer Janusz Kamiński is the most Oscar-awarded Polish filmmaker.  The second most-awarded Pole was designer Anton Grot, who won one Academy Award and was nominated to the Oscars five times more.  The director Roman Polanski won an Oscar and was nominated four more times (additionally, "Knife in the Water", film directed and written by him was also nominated).  The composer Bronislau Kaper was awarded an Oscar and was nominated three times more.

The Story of G.I. Joe: The Story of G.I. Joe, also credited in prints as "Ernie Pyle's Story of G.I. Joe", is a 1945 American war film directed by William Wellman, starring Burgess Meredith and Robert Mitchum.  The film was nominated for four Academy Awards, including Mitchum's only nomination for Best Supporting Actor.  This was the film that established him as one of the world's biggest movie stars.

Supporting paragraphs: Avengers: Infinity War Bradley Cooper
Answer: Bradley Charles Cooper