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:
| Chapter | Installation Date | Institution | Location | Inactive |
| --- | --- | --- | --- | --- |
| Gamma | Cannot handle non-empty timestamp argument! 1930 | Oregon State University | Corvallis, Oregon | 1968 |
| Delta | Cannot handle non-empty timestamp argument! 1930 | Whitman College | Walla Walla, Washington | ? (before 1950) |
| Epsilon | 1931 | University of New Mexico | Albuquerque, New Mexico | ? (evidence of activity in 1951) |
| Iota | 1935 | University of California, Berkeley | Berkeley, California | ? (evidence of activity in 1949) |
| Lambda | Cannot handle non-empty timestamp argument! 1937 | University of Arizona | Tucson, Arizona | 2000 |
| Nu | Cannot handle non-empty timestamp argument! 1939 | University of California, Santa Barbara | Santa Barbara, California | ? (evidence of activity in 1972) |
| Xi | 1941 | Illinois Wesleyan | Bloomington, Illinois | ? (evidence of activity in 1945) |
| Rho | Cannot handle non-empty timestamp argument! 1942 | University of Southern California | Los Angeles | ? (evidence of activity in 1985) |
| Sigma | Cannot handle non-empty timestamp argument! 1945 | University of Texas, El Paso | El Paso, Texas | ? (evidence of activity in 1968 and 1974) |
Question:
What does the inactive state for University of Texas, El Paso? 
Answer:
? (evidence of activity in 1968 and 1974)