Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Match Day | Date | Opponent | Venue | Score | Attendance | Report |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | 29 July | Hibernian | A | 1–1 | 15046.0 | AFC Heritage |
| 2.0 | 5 August | Inverness Caledonian Thistle | H | 1–1 | 11955.0 | AFC Heritage |
| 3.0 | 12 August | Motherwell | A | 2–0 | 5186.0 | AFC Heritage |
| 4.0 | 19 August | St. Mirren | A | 1–1 | 5344.0 | AFC Heritage |
| 5.0 | 26 August | Dunfermline | H | 1–0 | 9889.0 | AFC Heritage |
| 6.0 | 9 September | Celtic | H | 0–1 | 15304.0 | AFC Heritage |
| 7.0 | 16 September | Falkirk | A | 2–0 | 5812.0 | AFC Heritage |
| 8.0 | 24 September | Heart of Midlothian | H | 1–3 | 11160.0 | AFC Heritage |
| 9.0 | 1 October | Rangers | A | 0–1 | 50488.0 | AFC Heritage |
| 10.0 | 14 October | Kilmarnock | A | 0–1 | 5700.0 | AFC Heritage |
| 11.0 | 21 October | Dundee United | H | 3–1 | 10747.0 | AFC Heritage |
| 12.0 | 30 October | Hibernian | H | 2–1 | 11179.0 | AFC Heritage |
| 13.0 | 6 November | Inverness Caledonian Thistle | A | 1–1 | 5744.0 | AFC Heritage |
| 14.0 | 11 November | Motherwell | H | 2–1 | 10527.0 | AFC Heritage |
| 15.0 | 18 November | St. Mirren | H | 2–0 | 11426.0 | AFC Heritage |
| 16.0 | 25 November | Dunfermline Athletic | A | 3–0 | 6501.0 | AFC Heritage |
| 17.0 | 2 December | Celtic | A | 0–1 | 58911.0 | AFC Heritage |
| 18.0 | 9 December | Falkirk | H | 2–1 | 10594.0 | AFC Heritage |
| 19.0 | 16 December | Heart of Midlothian | A | 1–0 | 17274.0 | AFC Heritage |
| 20.0 | 23 December | Rangers | H | 1–2 | 20045.0 | AFC Heritage |
| 21.0 | 26 December | Kilmarnock | H | 3–1 | 11887.0 | AFC Heritage |
| 22.0 | 30 December | Dundee United | A | 1–3 | 12329.0 | AFC Heritage |
| 23.0 | 2 January | Hibernian | A | 0–0 | 16278.0 | AFC Heritage |
| 24.0 | 13 January | Inverness Caledonian Thistle | H | 1–1 | 10300.0 | AFC Heritage |
| 25.0 | 27 January | St. Mirren | A | 2–0 | 4926.0 | AFC Heritage |
| 26.0 | 10 February | Dunfermline | H | 3–0 | 9379.0 | AFC Heritage |
| 27.0 | 17 February | Celtic | H | 1–2 | 16711.0 | AFC Heritage |
| 28.0 | 3 March | Falkirk | A | 2–0 | 5825.0 | AFC Heritage |
| 29.0 | 10 March | Heart of Midlothian | H | 1–0 | 13964.0 | AFC Heritage |
| 30.0 | 13 March | Motherwell | A | 2–0 | 4530.0 | AFC Heritage |
| 31.0 | 17 March | Rangers | A | 0–3 | 50354.0 | AFC Heritage |
| 32.0 | 31 March | Kilmarnock | A | 2–1 | 7236.0 | AFC Heritage |
| 33.0 | 7 April | Dundee United | H | 2–4 | 12148.0 | AFC Heritage |
| 34.0 | 21 April | Hibernian | H | 2–2 | 9753.0 | AFC Heritage |
| 35.0 | 28 April | Kilmarnock | H | 3–0 | 10046.0 | AFC Heritage |
| 36.0 | 6 May | Heart of Midlothian | A | 1–1 | 17208.0 | AFC Heritage |
| 37.0 | 12 May | Celtic | A | 1–2 | 59510.0 | AFC Heritage |
| 38.0 | 20 May | Rangers | H | 2–0 | 20010.0 | AFC Heritage |
Question:
Who was the opponent on 12 May, when the match day was more than 33?
Answer:
Celtic