Take the following as truth: Thank you, I will. He laughed rather ruefully, as he described how he had discovered a very rare species of fern in an inaccessible place, and in his efforts to obtain it had lost his footing, and slipped ignominiously into a neighbouring pond. 
Then the following statement: "He laughed when he talked about finding the new plant." is true, false, or inconclusive?
Answer: True