Q: "A surfer riding a wave in the ocean." Does this mean that "The surfer is competing in a competition."?
A: it is not possible to tell

Q: "Two people pose for a picure holding a card that says "know what this is?"" Does this mean that "Some ladies are standing in front of the courthouse with a sign."?
A: it is not possible to tell

Q: "A van with flags advertising floats, boogie boards, umbrellas, chairs, and surfboards." Does this mean that "The van is colorfully overflowing with a melange of advertising signs."?
A: yes

Q: "Two children are riding through snow on a sled-like frame." Does this mean that "Two children are sledding."?
A:
yes