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:
| Code & location | Missile Type | Defense Area | Dates | Control Site condition/owner | Launch Site condition/owner |
| --- | --- | --- | --- | --- | --- |
| M-02 Brown Deer Rd | 1B, 2C/18H, 30A/12L-U | Milwaukee | 1957-1971 Jun | Woods & subdivision | Obliterated |
| M-20 Harbor Drive | 3B/18H, 30A/12L-U | Milwaukee | 1957-1971 Jun | Grant Park | lakefront office buildings |
| M-42 Cudahy | 1B, 2C/30A/12L-A | Milwaukee | 1956-1961 Aug | Warnimont Golf Course | Cudahy High School |
| M-54 " Hales Corners " :2 | 1B, 2C/30A/12L-A | Milwaukee | 1956-1961 Aug | Obl. Franklin "Root River" site | Oak Creek industrial site |
| M-64 Muskego /Prospect | 1B, 2C/30A/12L-A | Milwaukee | 1956-1963 Mar | machine shop on Martin Dr. | Obliterated, being redeveloped |
| M-74 Waukesha | 1B, 2C/18H, 30A/12L-U, (10L-H) | Milwaukee | 1956-1971 Jun | structures remain in Hillcrest Park | Obliterated, being redeveloped |
| M-86 Lannon | 1B, 2C/30A/12L-A | Milwaukee | 1956–1958 | Lannon County Park offices | Largely intact, private owner |
Question:
What is every control site condition and owner if launch site condition and owner is Lakefront Office Buildings?
Answer:
Grant Park