Consider the following premises. For all x_6, x_6 will listen to a song or x_6 will not drink water. For all x_6, if x_6 climbs a mountain, then x_6 is listening to a song. For all x_6, x_6 is a taxi driver or x_6 will drink water. For all x_6, x_6 is not a taxi driver or x_6 will climb a mountain. Can we infer the following from them? For all x_6, x_6 will listen to a song.
 From the fact that for all x_6, x_6 is a taxi driver or x_6 will drink water, and that for all x_6, x_6 is not a taxi driver or x_6 will climb a mountain we can infer that for all x_6, x_6 will drink water or x_6 will climb a mountain. From the fact that for all x_6, x_6 will listen to a song or x_6 will not drink water we can infer that for all x_6, if x_6 drinks water, then x_6 is listening to a song. Finally, from the fact that for all x_6, if x_6 drinks water, then x_6 is listening to a song, that for all x_6, if x_6 climbs a mountain, then x_6 is listening to a song, and that for all x_6, x_6 will drink water or x_6 will climb a mountain we can infer that for all x_6, x_6 will listen to a song. Therefore, the answer is yes.