Simka reads "Empire State Building" by J. Patrick Lewis and realizes that New York City is surrounded by water. Which line(s) from the poem most likely helped Simka make this connection?

“I am an American boy . . .”
“We dream / the riveter’s dream, held island-fast.”
“I sleep, the city sleeps.”
“Wait here on my doorstep, Central Park, / while I look over Harlem.”