<human>: Question: Half of the top earners were mostly in what field?
Answer: An investigation by ProPublica found that at least 21 doctors have been paid more than $500,000 for speeches and consulting by drugs manufacturers since 2009, with half of the top earners working in psychiatry, and about $2 billion in total paid to doctors for such services.
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: yes