The fire that destroyed the municipal building erupted just before dawn this morning, and the last firefighter did not leave until later this afternoon. No one would be near such a fire without noticing the fire. Thomas must have seen it That fire, no matter how he denies it, he went to the library from his apartment as usual this morning, and there was no way to go from his apartment to the library without going through the municipal building. What is the main conclusion of the above discussion? ['Thomas is near the big fire this morning.', 'Thomas claims that he did not see the fire.', 'Thomas saw the fire.', 'Thomas went straight from his apartment to the library this morning.']